How to remain free from anxiety?

Following is an excerpt from a samvaad (dialogue) session with Acharya Prashant.

Questioner: I have suffered from anxiety a lot, I have also been to many psychiatrists, and they have always advised me to be secure in my environment, they say “You should have faith in your environment and your parents,” but I have found that it is something very false. I can have faith and start believing that my life is…