Jacksonville
Photo of Dr. W Frank Diak - Dr. Diak, The Happiness Psychologist, Psychologist, PhD
Dr. Diak, The Happiness Psychologist
Psychologist, PhD
Photo of Dr. W Frank Diak - Dr. Diak, The Happiness Psychologist, Psychologist, PhD

Dr. Diak, The Happiness Psychologist

Psychologist, PhD

Verified by Psychology Today Verified by Psychology Today
4 Endorsed
Jacksonville, FL 32259
(727) 233-5838
Let's Connect (727) 233-5838
Photo of Dr. W Frank Diak - Dr. Diak, The Happiness Psychologist, Psychologist, PhD
Have you tried therapy before and felt it didn’t go deep enough—or been frustrated by confusing acronyms and trendy therapy fads that didn’t help? Good therapy should feel different. I’m Dr. Diak, a licensed psychologist with advanced doctoral training and decades of clinical—and real-life—experience. My client-centered therapy approach integrates empowering, evidence-based techniques. Gain clarity, learn skills, build confidence, and feel happier and more hopeful about your life. Experience the power of an authentic connection where you'll feel truly heard, understood, and supported—perhaps for the first time in your life.
Whether you’re healing from childhood trauma, coping with anxiety, depression, or struggling in relationships, you'll experience a safe, compassionate space to explore what’s holding you back, receive honest feedback, and create meaningful, positive change. Together, we’ll find a path to reach your goals, while carefully monitoring your progress.
Therapy should be more than talk—it should help you feel seen, supported and hopeful about your life. If you’re ready for thoughtful guidance and empowering strategies from an experienced psychologist, let's begin the work of creating a life that feels clearer, stronger, and happier. Call today for a free, brief consultation. Let's explore how I can help.
Call or Dr. Diak, The Happiness Psychologist now for a free 15 minute consultation - (727) 233-5838

Practice at a Glance

Available online only

Dr. Diak, The Happiness Psychologist

Jacksonville, FL 32259

(727) 233-5838

Dr. Diak, The Happiness Psychologist

Hialeah, FL 33012

Convenient, secure video sessions available most days and eves. Skip the drive and awkward waiting rooms! Sessions available within 1 week.
I specialize in Anxiety, Depression and Relationship Issues 
$165 Per Session, I accept insurance 
Individual one-on-one therapy 
I'm a experienced, warm, compassionate psychologist who will empower you to overcome anxiety, depression, relationship issues and trauma.
Dr. Diak, The Happiness Psychologist
Let's Connect (727) 233-5838
Photo of Dr. W Frank Diak - Dr. Diak, The Happiness Psychologist, Psychologist, PhD

Practice at a Glance

Available online only

Dr. Diak, The Happiness Psychologist

Jacksonville, FL 32259

(727) 233-5838

Dr. Diak, The Happiness Psychologist

Hialeah, FL 33012

Convenient, secure video sessions available most days and eves. Skip the drive and awkward waiting rooms! Sessions available within 1 week.
I specialize in Anxiety, Depression and Relationship Issues 
$165 Per Session, I accept insurance 
Individual one-on-one therapy 
I'm a experienced, warm, compassionate psychologist who will empower you to overcome anxiety, depression, relationship issues and trauma.
Dr. Diak, The Happiness Psychologist

Finances

Fees

  • Individual Sessions $165

Payment Methods

American Express, Discover, Health Savings Account, Mastercard, Paypal, Visa

Insurance

  • Aetna
  • Allied Benefit Systems - Aetna
  • AllSavers UHC
  • Ascension
  • Blue Cross/Shield (MASS Only)
  • Carelon Behavioral Health
  • Christian Brothers Services
  • Cigna and Evernorth
  • Confide Enhanced EAP
  • Health Savings Accounts
  • Health Scope - Aetna
  • Meritain Health
  • Nippon
  • Optum
  • Optum Emotional Wellbeing
  • Optum Live & Work Well (EAP)
  • Oscar Health
  • Oxford
  • Providence Health Plan
  • Quest Behavioral Health
  • Resources for Living EAP
  • Surest (Formerly Bind)
  • Trustmark Health Benefits
  • Trustmark Small Business
  • UHC Student Resources
  • United Healthcare (Optum)
  • United Healthcare Shared
  • UnitedHealthcare Global
  • UnitedHealthcare UHC | UBH
  • Wellfleet
"
Affordable therapy with easy, hassle-free insurance! We handle the insurance claims and billing online for you automatically. Most major plans accepted: AETNA, BCBS of Massachusetts, Carelon Behavioral Health, Cigna, Oscar (Optum), Oxford (Optum), Quest Behavioral Health, United Healthcare ...
Photo of Dr. W Frank Diak - Dr. Diak, The Happiness Psychologist, Psychologist, PhD
Dr. Diak, The Happiness Psychologist
Psychologist, PhD
Call or for a free 15 minute consultation now - (727) 233-5838
"
Affordable therapy with easy, hassle-free insurance! We handle the insurance claims and billing online for you automatically. Most major plans accepted: AETNA, BCBS of Massachusetts, Carelon Behavioral Health, Cigna, Oscar (Optum), Oxford (Optum), Quest Behavioral Health, United Healthcare ...
Photo of Dr. W Frank Diak - Dr. Diak, The Happiness Psychologist, Psychologist, PhD
Dr. Diak, The Happiness Psychologist
Psychologist, PhD
Call or for a free 15 minute consultation now - (727) 233-5838

Qualifications

    Psychologist: Dr. W Frank Diak
  • Verified by Psychology Today Licensed by State of Florida / PY8129 Dr. W Frank Diak

    • Education and Years In Practice

  • In Practice for 36 years
  • Attended Temple University, Philadelphia, PA, Doctoral Degree in Psychology, Graduated 2002
"
Education, professional experience, and life experience MATTER! Receive competent, expert therapy from an experienced psychologist with a doctoral degree from a recognizable university. Get better results. Let's work together to find solutions. Call today to start your journey! All calls returned.
Photo of Dr. W Frank Diak - Dr. Diak, The Happiness Psychologist, Psychologist, PhD
Dr. Diak, The Happiness Psychologist
Psychologist, PhD
Call or for a free 15 minute consultation now - (727) 233-5838
"
Education, professional experience, and life experience MATTER! Receive competent, expert therapy from an experienced psychologist with a doctoral degree from a recognizable university. Get better results. Let's work together to find solutions. Call today to start your journey! All calls returned.
Photo of Dr. W Frank Diak - Dr. Diak, The Happiness Psychologist, Psychologist, PhD
Dr. Diak, The Happiness Psychologist
Psychologist, PhD
Call or for a free 15 minute consultation now - (727) 233-5838

Specialties and Expertise

Top Specialties

  • Anxiety
  • Depression
  • Relationship Issues

Expertise

  • Codependency
  • Coping Skills
  • Educators, Attorneys, Doctors, Entrepreneurs
  • Geriatric and Seniors
  • Grief
  • Life Transitions
  • Men's Issues
  • Mood Disorders
  • Narcissistic Personality (NPD)
  • Obsessive-Compulsive (OCD)
  • Peer Relationships
  • Personality Disorders
  • Physicians, Lawyers, IT Professionals
  • Self Esteem
  • Stress
  • Trauma and PTSD
  • Women's Issues
"
Feel better today by taking the first step! Overcome anxiety, panic attacks, depression, self-esteem, relationship problems, childhood trauma, complex trauma, relational trauma and PTSD with an expert in growth-oriented therapy. You'll gain a deeper understanding of your issues, and tools to improve your life. Call today to experience compassionate, empowering therapy for creating a happier life!
Photo of Dr. W Frank Diak - Dr. Diak, The Happiness Psychologist, Psychologist, PhD
Dr. Diak, The Happiness Psychologist
Psychologist, PhD
Call or for a free 15 minute consultation now - (727) 233-5838
"
Feel better today by taking the first step! Overcome anxiety, panic attacks, depression, self-esteem, relationship problems, childhood trauma, complex trauma, relational trauma and PTSD with an expert in growth-oriented therapy. You'll gain a deeper understanding of your issues, and tools to improve your life. Call today to experience compassionate, empowering therapy for creating a happier life!
Photo of Dr. W Frank Diak - Dr. Diak, The Happiness Psychologist, Psychologist, PhD
Dr. Diak, The Happiness Psychologist
Psychologist, PhD
Call or for a free 15 minute consultation now - (727) 233-5838

4 Endorsements

Pinellas Anxiety Specialists
Pinellas Anxiety Specialists
Psychologist, PsyD, LMHC
I highly recommend Frank due to his breadth and depth of experience, and his continuous desire to learn and improve his skills. I often consult with Frank on difficult cases because I know his insight will provide value. He is willing to go above and beyon...
Joseph Assouline
Joseph Assouline
Psychologist, PsyD
Dr. Diak has been a very knowledgable and thoughtful colleague. He is well versed in a variety of therapies and approaches his work with great care and empathy.
Dr. Maureen Corbett
Dr. Maureen Corbett
Psychologist, PhD, MA, MSEd
Dr. Diak is dedicated to excellence in his services to his clients. I highly recommend him!
Jessica Beachkofsky
Jessica Beachkofsky
Psychiatrist, MD, MSCP
Dr. Diak blends clinical knowledge with genuine compassion. His growth-oriented approach is thoughtful and empowering; great for those seeking clarity, healing, and lasting change. A trusted resource for trauma, anxiety, and emotional stuck points.

Client Focus

Age

Adults , 
Elders (65+)

Participants

Individuals

Age

Adults , 
Elders (65+)

Participants

Individuals

Treatment Approach

Types of Therapy

  • Acceptance and Commitment (ACT)
  • Attachment-based
  • Coaching
  • Cognitive Behavioral (CBT)
  • Eclectic
  • Experiential Therapy
  • Humanistic
  • Integrative
  • Internal Family Systems (IFS)
  • Motivational Interviewing
  • Positive Psychology
  • Psychodynamic
  • Relational
  • Strength-Based
  • Trauma Focused
"
Your needs are unique, so your therapy should be too. In our first session, we'll work together to understand your therapy goals: how you got here, and where you want to go. We'll explore several therapy approaches to find the perfect fit for you. Throughout your therapy, you'll feel supported and understood. You'll learn tools and techniques to solve your problems and create lasting change.
Photo of Dr. W Frank Diak - Dr. Diak, The Happiness Psychologist, Psychologist, PhD
Dr. Diak, The Happiness Psychologist
Psychologist, PhD
Call or for a free 15 minute consultation now - (727) 233-5838
"
Your needs are unique, so your therapy should be too. In our first session, we'll work together to understand your therapy goals: how you got here, and where you want to go. We'll explore several therapy approaches to find the perfect fit for you. Throughout your therapy, you'll feel supported and understood. You'll learn tools and techniques to solve your problems and create lasting change.
Photo of Dr. W Frank Diak - Dr. Diak, The Happiness Psychologist, Psychologist, PhD
Dr. Diak, The Happiness Psychologist
Psychologist, PhD
Call or for a free 15 minute consultation now - (727) 233-5838

Location

Primary Location

Dr. Diak, The Happiness Psychologist

Jacksonville, FL 32259

(727) 233-5838

Email us

Website

Additional Location

Dr. Diak, The Happiness Psychologist

Hialeah, FL 33012

(727) 233-5838

Nearby Areas

Cities

Counties

Zips

Neighborhoods

"
Convenient, secure video sessions available most days and eves. Skip the drive and awkward waiting rooms! Sessions available within 1 week.
Photo of Dr. W Frank Diak - Dr. Diak, The Happiness Psychologist, Psychologist, PhD
Dr. Diak, The Happiness Psychologist
Psychologist, PhD
Call for a free consultation now - (727) 233-5838
"
Convenient, secure video sessions available most days and eves. Skip the drive and awkward waiting rooms! Sessions available within 1 week.
Photo of Dr. W Frank Diak - Dr. Diak, The Happiness Psychologist, Psychologist, PhD
Dr. Diak, The Happiness Psychologist
Psychologist, PhD
Call for a free consultation now - (727) 233-5838