Hi Aka !
I can really relate .. I have exactly the same OCD-"rituals" as you - my hands are so dry and cracked, they look like an old ladys ..
The last OCD thing you have developed is almost identical to what I am going trough ..Some days I constantly look in the mirror, and it makes me anxious if I dont do it, as well as it makes me anxious doing it .. I have problems leaving the house, I am afraid that when I come home, new acne has formed. I have to keep it "in check", even though I know it is irrational and ridicolous.
On the good days, I make a schedule about what I want to do during the day, which is not skin-related. I HAVE to shop, I have to call my friend, I want to watch a program or a movie, read a book, have a coffee date with a good friend. The more you plan, the more obligated you will hopefully feel about doing non-skin related stuff .. Make a compromise with yourself ... you are allowed to look in the mirror and apply things every other hour, then every third hour, and so on.
Try to think positive things and focuse on other awesome qualities about your personality. As a bonus, from my own experience, your stress levels about it will go down = better looking skin. Dont upset it to much, applying all sorts of stuff. If you overdo it, it will get worse.
I know it is really really hard, but if you work with coping-stragegies it will get better!
Sometimes I like to talk to someone who is completely rational about it, for instance my sister. She calmes me down by saying things like "if not changing your pillowcase every other day caused acne, 99% of all people would have acne"
Best of luck to you !
remember that you are not alone!