As featured in So Graham Norton a few years ago...
THE MORMON'S GUIDE TO PREVENTING M4STURBATION!

http://www.moonmac.com/Mormon_m4sturbation.html

my favourite bit...
"When the temptation to masturbate is strong, yell STOP to those thoughts as loudly as you can in your mind and then recite a prechosen Scripture or sing an inspirational hymn. It is important to turn your thoughts away from the selfish need to indulge."
and
"Make a pocket calendar for a month on a small card. Carry it with you, but show it to no one. If you have a lapse of self control, color the day black. Your goal will be to have no black days. The calendar becomes a strong visual reminder of self control and should be looked at when you are tempted to add another black day. Keep your calendar up until you have at least three clear months."
hmmm...
I see a calendar and it's all painted black...

Wanker!

I like

20. Set up a reward system for your successes. It does not have to be a big reward. A quarter in a receptacle each time you overcome or reach a goal. Spend it on something which delights you and will be a continuing reminder of your progress.