Good for you. You should stop.
People who don't masturbate often find that kicking the habit makes them more outgoing and confident, they have more time to do things, they objectify women less and generally have healthier relationships, they are much more energetic, their minds are less clouded, they feel less 'drained', and if you browse this highly supportive subreddit (
http://www.reddit.com/r/NoFap/ ) you'll find people who have experienced a number of other benefits as well.
You see, by masturbating, we reinforce our tendency to hide from the world and to indulge in something that requires little effort but yields instant gratification, rather than embracing tough challenges, which is what we need to do to be successful in life
. You might also want to look up sexual transmutation.
Or maybe you already knew all of that?
Honestly the best way to stop masturbating is, whenever you have the urge, just take a moment to think about what you're doing. Think about the consequences of going through with it, and how good you'll feel about yourself in the longer run if you choose not to. Do you want to give in to the temptation of a transitory pleasure that will leave you feeling tired and unfulfilled, which also leaves you with an embarrassing mess to clear up? Or would you rather spend your time and energy on something that will make you feel good about yourself? (masturbating generally makes us feel small and weak). I'm digressing a little. You just need to say 'no' to yourself. Do something, anything else rather than ****. Also, cold showers work like magic. They may be unpleasant, but they make you feel great afterwards; more determined, happier.
So yeah. Just say no, fill your time with constructive activities and take cold showers and remind yourself daily of the plethora of life changing benefits not fapping will bring!