Dear Anurag,
Welcome to health care magic. I am Dr Alok Sinha, MD Psychiatry from India. I will try my best to answer your query.
It appears that there are a lot of myths in your mind related to
masturbation. Many people belief that masturbation causes loss of vigor and power, it makes penis curved, makes a man impotent, causes weakness in eyes etc. But let me assure that it is not true.
Due to prevailing believes in our society many of us condemn masturbation. But due to sexual urges a person does it. After each act the person feels a guilt that he had committed something wrong and he should not do it again. After a period of time he again does the act due to sexual urges and after completion of act feel himself guilty. This goes on and the person holds himself responsible for his behaviour. Due to wrong knowledge about various adverse effects and also due to hype of so called ill effect by quacks and hakims our mind is already full of fear. A normal person with this habit blames everything to this and becomes anxious of getting permanent sexual and physical weakness. Many of the quacks and hakims take advantage of this man psychology and make thousands of money.
To clear your doubt, I must tell you that masturbation is a safe self gratifying sexual practice. At the end of masturbation after orgasm our body gets relaxed and needs little rest. This relaxation induces sleep which is mistaken by people as weakness. It does not cause sexual, physical or mental weakness. Good health depends on a lot of other things like balanced diet, regular exercise, adequate rest, and sound sleep. Don't be so anxious. It is unnecessary
anxiety that is hampering your study not masturbation.
You should not think yourself addicted to it as almost every man does it and it is a common phenomenon. If you still consider yourself addicted and want to control this behaviour then you may visit a
psychiatrist who may advice you further and give you some medications like
SSRI to allay your anxiety and control your habit.
Circumcision is not a cure for your myths.
I hope it answers your question. I wish you all the best.