I went through a break up with my boyfriend of a year and half, not too long ago. It was this past July (a month before my birthday). Isn't that a nice early birthday gift!? Well enough of me. X_X
Anyhow, about your situation the advice I can give from what I learn and done to "move on" is to not talk to him/her or even call for a long period of time. You should spend more time with close friends and families. Have fun with friend by going out, go watch a movie, go dine out for lunch/dinner, or talk on the phone.
Don't get me wrong, I still think about him from time to time. He pops into my head, I guess it just conscious telling me I'm not "really" over him, but this kept me from calling and being so clingy.
Healing takes time and a lot of effort to get something good in return.
Keep your head up and don't over think too much
Best of luck to you!