To help you move on, think of only the good times and accept that people change, the timing wasn't right, life goes on. If you only focus on the break-up then yeah, it'll definitely suck and you'll grovel about it for months on end. You lament because you're still making excuses for him. What you need to do is come up with 2 lists of pros and cons. First list is to write down his good and bad qualities. Second list is to write down the qualities of the relationship.
Next, look at the "pro" side of the list. My guess is that you can find all those qualities in someone else. So there you go, the world doesn't have to end and so what if he isn't the one?