I wonder if you might be approaching the problem from the wrong direction. In all likelihood, you're not going to make any grave mistakes -- you're just going to make food slightly below par a couple times until you hone in your cooking skills. It's probably worth practicing cooking some simple meals until that sense of paranoia diminishes rather than trying to cater to it.

(I honestly used to avoid cooking because I wasn't good at it -- the only thing to "fix" that was to start cooking, and now I feel comfortable with it and cook all the time)