Here are some questions to consider if you think you might be masturbating compulsively:
- Is masturbation your favorite kind of sex? (Ignore this question if you’re a virgin.)
- Do you masturbate mainly because you often masturbate at such a time of day?
- Do you masturbate when you know that doing so will make you late for something?
- Do you feel a need to masturbate after having sex with a partner?
- Do you frequently masturbate in inappropriate places? (While driving, at work, in school, etc.)
- Do you get up right after you ejaculate? (Most people like to relax after an orgasm.)
- Do you feel like you’re cheating yourself if you “miss a day”?
- Do you have more erotic material than you have room for?
Answering yes to more than one of these questions is a sign that you’re masturbating compulsively.
http://healthystrokes.com/mast.html