Hey, I just got out of a 7 month relationship and I don't know what to do?

I am about to go to college after the summer ends and I am trying to figure things out because it is different of not having my ex part of my day. I really am at lost and I am trying to figure out what is the best thing to do right now. I really ache to see her every second, but I know that I have to move on so she can be happy. Are there any suggestions how I can get through this till college comes?