I am much inspired by this fact in the post, "One of the great teachings in spiritual life is this: It doesn't matter what is happening. What matters is how we respond. How we respond is what determines our happiness and peace of mind." To this, I would like to add my spiritual experience: How we respond depends on how we think, and how we think depends on how we perceive.

In short, for a better response or behavior, one's vision or perspective needs to be broad and fair. A narrow vision is actually the root cause of most problems in life. For broadening the vision, one needs to address the following questions with spiritual knowledge:
Who is the doer?
Who is actually at fault?
Why suffering is there in life?

Only when these truths unfold, one can experience complete stability without any kind of anxiety or worry. Luckily, I got these answers at
http://www.dadabhagwan.org/scientific-solutions/self-help/how-to-stop-worrying/who-is-the-doer/
http://www.dadabhagwan.org/scientific-solutions/self-help/who-is-at-fault-why-do-i-suffer/who-is-responsible/