willpower borns from selfishness, anger and animal instinct, it's basically wanting to impose yourself over anything because you must procreate and spread your genes lack of will leads you to let someone else's will win over you (in your case, failing for buy useless shit) masturbation makes this worse cuz you gets more relaxed and you "turn off temporaly" your animal instinct after cumming, thus becoming more docile and weaker
Mexico