I don’t really have OCD, but I certainly have some tendencies that relate to ordering things and completeness. The running app I use to track my runs shows weekly progress as a stack of blocks with one new block each day I run. There are ten stacks visible at all times. I have been running every day for the past few months. It has been easy because I don’t have to think about whether I run each morning or not. I just get up and do it. The app helps provide additional motivation because I enjoy seeing all ten stacks of blocks complete with seven runs each week. I just accomplished that for the second time. That’s 70 straight days of running every day. Of course it is good for my health, but those stacks of blocks look really great.