Like some branches of psychology and many wisdom traditions, key philosophical frameworks attempt to make sense of human existence and experience, and to connect those experiences to the world at large: The formal study of logic helps in decision-making, and in interrogating arguments and (seemingly) rational thought. Epistemology examines belief, opinion and objective knowledge; as such it can help people understand whether their closely-held derive from objective or subjective information. Axiology is a fancy term for the study of ethics and aesthetics.
Psychology and neuroscience show us that many of our belief systems are adaptive; the aesthetics of what we find pleasing and the ethics of societal conduct evolved over time to aid in human survival and reproduction. As such, all philosophy has psychological underpinnings. Key philosophical inquiries including the relationship between mind and body, the meaning of free will and faith, the nature of consciousness, and what constitutes happiness, are simply components of our brains' operating system, and as such can be framed philosophically or scientifically.