Originally Posted by
sicknote 
Boom, the obsession is back again. Can't switch off my head, it goes round and round, and you ask yourself, How does someone stop thinking about something they shouldn't think about? Then I came back and read this post and realised, it's impossible to stop thinking about the wrong things, but you can start thinking about the right things.
Since getting sober I've learnt it is entirely possible to learn to control my thoughts and not let my thoughts control me. It is not impossible to stop thinking about the wrong things -the brain just needs some help in re-training
I would recommend you read a book. i bought it off Amazon. I'm not into self help books at all but this is more of building blocks to retrain your thought processes. It's very easy to read and it works
"Think Right, Feel Right " by Robert Isett