Quit caffeine and substitute in cold showers.

[An Infinity Of Little Hours]

cold showers are a scam jfl at this common "life hack" 

Quitting caffeine is probably good though

My point is that the more we force ourselves to do things we don't want to, the stronger we become. 

Aleister Crowley talked about not using your left arm for a month and not saying the word "I" for a month. 

This is a scam too obviously but it will engender such a high level of willpower you will be able to use that to stop jacking off and translate it into other things. 

This is like "magick" in the occult sense I think... I'm not sure. I'm just now getting into it.