Compare yourself to people who are more skillful, talented or attractive than you are. Then give yourself a hard time for not being good enough. Base your self-worth on all your deficiencies. If you find that you are gifted in any area, tell yourself that it doesn't count, because there are so many other areas where you don't measure up.
Woke up in the fecal position, my memory wiped. It was shitty. Dammit, I'm sick now. Starting that whole fevery thing, as well as some intestinal disturbances. Going to bed.