To start, it certainly helps if you have gone at least a week with no releases. The next important step is to get to the edge slowly, and with minimal stimulation. A mild vibrator or single finger on the underside of your penis is good. Once the edge is near, it is time to go even slower, but you need to focus on breathing and relaxing. You must put forth all your concentration on breathing slowly and deeply. As the edge gets closer, focus on relaxing your muscles down there, as if you were going to pee (extremely important). Once you feel that you are going to go over the edge, stop all stimulation and put forth all your will power on relaxation of those muscles. You must stop well before any cum has risen to the surface. Soon, if relaxed properly, you will produce a continuous flow/ooze of cum. This is where the will power REALLY comes in to play. It is tempting to stop relaxing the muscles and to start spasming and squirting. Ruined orgasms should have absolutely no squirts, spurts, or spasms. Ever. If you really want to ruin your release, keep the focus on relaxation and watch as your cum helplessly oozes out in a continuous flow, giving you no relief and very little pleasure.