Usually my torment is the project that is supposed to take one hour but ends up being 5 because a bolt shears off or you end up having to take most of the parts off the car to get to the one that you were trying to replace, because you stripped the head of one of the 12 bolts, due to the fact that you tried to get at it from the wrong angle which you knew you were doing, but tried anyway and then about then is when the wife asks if you're ready to go shopping (like you said you would) and knowing this was coming you thought "I'll get up at 5:30 on Saturday and get an early start on the project" that only took you 5 hours cuz it was supposed to be an hour and you were adjusting "just in case".
Sad thing really is that the project above was optional and everything was really working just fine but you thought "maybe I can make it just a little better if I do this..."
A couple of six packs and 10 hours sleep, fish all day, then you might be ready to try it again...