Yep sounds like OCD, though it would be good to get an official diagnosis. I have it too, and my father had it. I have all kinds of stuff around counting, straightening, things being out of order. I memorize words, letters, digits, slogans, jingles, tunes, and use them to keep track of things in my head. I also have disturbing and unwanted thoughts about things and can't stop obsessing about something once it's in my head. It's really hard to let go and move on.
It is possible to live with it. It's harder for some than for others. But one thing I've been told that does help is CBT.