hi.. i can understand your concerns,,...i am answering according to your questions..but i ll suggest u not to believe in myths and misbeliefs about sex, masturbation , nightfall, penis size that are prevalent in the community.. 1. masturbation is not a bad habit. it is a way of satisfying your sexual feelings in the absence of a sex partner..it will not affect your future sex life after your marriage..so stop worrying.. 2.daily masturbation does not affect your physical health, it is totally related to your dietary habits..recently there are some issues related to association of masturbation with acne over face..but so many preliminary studies have found that during masturbation the level of testosterone [make sexual hormone] increases which is responsible for some cases of acne, but further research have not shown any relation between masturbation and acne over face,,.. i will only advice u to reduce the frequency of masturbation if it is daily, u shud reduce to 2 to 3 times a week.. 3. masturbation does not affect penis size, there are no reports of such cases and there is no scientific bases behind that..so dont worry.. 4. causes of pimples on the face are many, it may be hormonal [male androgen mostly testosterone] but more commonly it is related to stress.. in woman it can occur during pregnancy, perimenopause, menopause. it may be a side effect of some medicatioon but it is very rare... u shud consult a dermatologist if u have acne which high in number and occuring repeatedly... possible treatment is as follows: 1. tablet azithromycin [azee] 500 mg once a day, for three days in a week, for 3 weeks.. 2. clindamycin gel local application all over face once a day at night.. 3. persol 2.5% [benzoyl peroxide gel] local application all over face in the morning u can apply gel as per your convenience..most common side effects of these gel is burning sensation over face..stop applying it if u have very severe burning sensation or red rash over the face.. i hope u ll find this advice helpful.. best luck..