I wonder if you could find some sort of hobby, like baking or something like that where you can spend a couple of hours making something small, over and over and over again. I find stuff like that helps to build self-esteem. I can look at the jelly I made and think, *I* made that and it was *good.* If I make something that's not so good, I can toss it and forget about it.

I am also in IT and have similar feelings about my competence. It's hard to get over them. I think part of it is the nature of the job itself. Have you been in the field long? I felt like it reached a fever pitch at one point and I can no longer do certain kinds of work.