Breaking up is a motherfucker. Sometimes it takes 6 months to a year to get free from that shit.
I recommend getting really busy with other things in your life. What did she prevent you from doing? Whatever it was, do that. It'll feel good. Hit the gym harder than ever before. Get some test, be a bad ass motherfucker. Get into MMA or jujitsu. If you got some good friends they should take you out to a strip club and give you a releasing into the wild party. Start working long hours - you have nothing better to do now than to get ahead professionally.
Don't listen to geighs like killabee