Do you repeat the same mistake over and over? What do you know you're supposed to do that you always forget?
For me, when frying foods, I always forget to dredge the item in flour before dipping in the egg, so my breading never sticks right. And it doesn't seem to matter how many cooking shows I walk, when I actually fry something, I always forget!
How about you? Is there something that drives you mad because you always forget to do it?