Good illustrated description; to put it in the simplest of terms, the theory is that if you think bad thoughts about yourself, you'll make yourself feel bad, po

Good illustrated description; to put it in the simplest of terms, the theory is that if you think bad thoughts about yourself, you'll make yourself feel bad, possibly to the point of clinical depression. It turns out that most of the bad thoughts people think about themselves are wrong, so as a therapy you work on correcting that.