I consider myself somewhat OCD, but I have to distribute my compulsive efforts or I'd become suicidal or something.
When it comes to photography, I can generally accept whatever results I get with what I feel is an appropriate amount of time spent on a shot. Perhaps that's because most are candid shots of the kids where you only get one shot. The amount or frequency of post processing I put into my shots has gone down over time, but there are still plenty of times I don't get it right. I blame those damn CFL lights for throwing white balance off all the time.
When I sell stuff, I don't put too much effort into it. It depends on the item. When we sold a car, I put a ton of effort into detailing the car, then properly framing shots in good light. For things selling for about $100, I might throw out a white sheet and shoot with a flash attached. For $50 or less, items are generally shot where they lay.
