Acne ; masturbation. There is no relation at all between masturbation and acne, or popping acne. If masturbation is one of the ways you relieve stress, you may find you increase this during times of stress. Some people's acne can become more inflamed during times of stress -- dietary changes may be at least partly responsible. Responses to sweets, dairy, fatty foods, etc are unique to each individual.
Not much. Enjoying your body doesn't cause acne and anyone who tells you otherwise is giving you disinformation. Nobody can keep their hands away from their pimples or messing with them. Manage your acne until it self-cures. If topical benzoyl peroxide as tolerated has not cleared you in two weeks, your personal physician can provide something that will.