I was able to abstain from masturbating for about 25 days. Here is what I've learned from that experience:
Masturbation is an addiction just like marijuana. At first quitting can be tough, you may get withdrawal symptoms or sudden urges. The important thing is to temporarily suppress all sexual thoughts. If you are at a computer, AVOID PORN SITES AT ALL COSTS. Once you get any stimulation, it's harder to go back and you'll probably just end up jerking off.
That being said,
Advantages of abstaining from masturbation:
Increased energy for school and work
Increased energy while working out
Increased confidence around other people
Increased confidence and assertiveness around women, can be due to increased horniness and/or increased testosterone levels from not losing semen
Happier mood from increased energy
Disadvantages:
May not last as long during sex
Possible anxiety due to increased horniness and/or testosterone
Increased horniness may cause you to make mistakes around wimmenz, must control yourself!*
Hard to avoid porno, all it takes is one pic or click to start the downward spiral of masturbation
The advantages come from the fact that it takes energy and testosterone for your body to produce semen and sperm. It makes sense that abstaining can help fight fatigue. The first few days are the toughest, after that the thought of masturbation barely crosses your mind.