I used to force myself to complete books that I'd decided stunk until I finally said to myself that life was too short. And it is - so no more of that goin' on.

I stayed in a few too many movies that stunk as well because I thought, "Well, I paid for this..." until I also decided I'd rather go do something else for free and not be miserable than stay watching a terrible movie that I paid for.

I don't do most of the other things that you mentioned. I've read that CBT is good for OCD/OCPD. I'm sorry that I don't have more to impart than that!