Is There a Book That You Should Read When You're Feeling Doubt?

What source do you go to when you're feeling doubt? My wife is an im immense force in my life. As far as a book, i highly recommend allan watts' "The truth of who you are" I print out every single one and i put em up on my mood board above my bed. If you like this podcast, there's something you can do right now to help. Head on over to eyetunes and leave a quick review.