Let's Try Again!!!!!!!

Ok, I'm on a different phase in life. I'm not having one night stands, got a nice girl, Im finally studying what I love (mechanical engeneering) and I feel, with almost certainty that PMO is bringing me down.....
I dont want to make this very long but my idea is to just cut the PM and leave the O since i'm in a stable relationship.
So, im going for the 90 day reboot... I dont know if it is apropriate.
Anyway, please do give your opinion on the matter, because all help is very apreciated.

I'm sorry for any spelling mistake.