The practice most frequently suggested by sex therapists is called the stop-start method, says Mark Schoen, Ph.D., a sex educator and producer of the instructional video You Can Last Longer: Solutions for Ejaculatory Control (Sinclair Institute). You basically rock along until you feel an orgasm rushing on. At that point you freeze, either inside your lover or after you withdraw (she’ll probably feel less bereft if you stay inside). Gain control of your senses. Ask yourself what day it is. Give your penis a moment to cool. Start again. Repeat as needed. Nothing could be simpler.
An orgasm, you see, is one part lust, two parts friction. Stop the friction, and you stop the orgasm.
Stop Start Technique
To get the most out of the stop-start technique, you should endeavor to bring yourself closer to the detonation point each time you do the technique. That way, you’ll learn to read your body’s signals, to monitor your level of excitement, and to nail the exact millisecond you need to stop. Over time, experts say, you’ll be able to come so darn close to ejaculation without actually spilling any seed that you’ll almost think you have. Yet you’ll be able to stay erect and keep on going and going with only an occasional moment’s hesitation (perpetually blissful) like some kind of sexual legend.
Read about more to help you here:
http://www.4-men.org/prematureejaculationcorrection.html
Please let us know if that doesn't help.
Kerry