You Are What You Think by David Stoop The book I am choosing is called You Are What You Think by David Stoop. I chose this book because I could relate to the subject. During the duration of my mission, I faced changes in my life that affected my perception of myself. I blamed myself for my failures and, in turn, I was too hard on myself. I knew the reason I would be depressed was because my attitude made me perceive myself that way. In turn, when I saw the title of the book, it struck me.