One thing you wanna try is control. If you're finding that masturbating isn't really doing it for you. I wouldn't stop like some are suggesting the sensitivity is probably there. Elongate your orgrasm
www.sextutor.com has some great tips. It is a very big control issue. When I masturbate anymore if I just ejaculate the first time i feel like it, not that mind blowing. Now I can elongate it for 10 times (read and you'll know). And my orgasms are phenominal. It will also make you a better longer lover, give you a stiffer rod. And will drive your partner wild and when you go, you will explode. Just practice man....what's the worst thing that could happen.... you go blind?