I need serious help...please...

I am a 19 year old guy in college. I've been jerking off at least three times a day since I was 11. It is a problem that I have hated for a long time. There isn't any satisfaction anymore... My record for orgasms in a single day is somewhere in the high twenties or early thirties. I have tried quitting cold turkey but I can only last a few days. I can't stop gradually because of how much of a habit this has become. My arm and hand hurt every time I fulfill an urge. My education and ability to get a job has been affected... I want to keep up my studies and I want to get a better job, but my habit gets in the way of it. I want to stop so I can get satisfaction from sex instead of masterbation. I want to stop because of my goals. I want to stop so I can have more self confidence and self esteem...

Asking for help is a hard thing for me to do. I've come to the point though that I can't stand it anymore. I'm miserable and I hate myself every time I finish... Please, if anyone has advice or can help let me know. I'm desperate to stop...