Believe it or not, I turn to the concepts I found it a self-help book. I usually HATE those kinds of books, since they are mostly so full of bullish!t and psychobabble.
A few years ago, when confronted with severe stress, deep depression, PTSD, and anxiety after an extreme loss situation in my life, I stumbled across a book that made a lot of sense to me and helped me learn to repair myself. It's a book titled "Worry" by Hallowell. You can get it on Amazon for cheap, and the author also has a website.
I never really thought that worry was as the heart of my issues, but this guy puts everything into a manageable perspective, and then actually gives you exercises about what to do about it. You might want to check it out.
FT