Live your life sweetie..
Get a hobby, go out with your friends, learn a new skill etc.
If you are having fun and enjoying your own company, you wont pay him any mind.
Especially if he is constantly in your mind. He lives in the same building and I can't stop thinking of him throughout the day. I see his name everywhere. I want to let go but even when doing something he comes up in my mind. I do the PW on him but my mind can't stop tracing to him.
How do you ladies do it?