The first thing you need to do is stop masterbating. The cause of most premature ejaculation problems us excessive masterbation,which trains your ejaculatory reflex to release quickly causing PE.
I had the same problem, and I got lucky and found a site that taught me how to retrain my EJ reflex allowing me to last 15-20 minutes,when before I'd be hard pressed to last 1 minute. Go to the site,follow the step by step methods and I'm sure it will help you too.