masturbation from childhood and now too at the age of 20years

Sir I have been doing masturbation from childhood. I had the habit from childhood from nursery school, I don't know how I got it. I used to do it 4-5 Times a day watching porn or girls pictures. Now sir I k in college I know how bad I was and how damage it made to my body and mind. I was brilliant in chess, cricket but due to the habit I used to stay at home and have the fear and not have the confidence be talk and be with people, now also I have. I am so skinny and my height is short and I have weak memory and even more weak concentration in anything, leave studies. Due to my habit I have lost my life up to school sir but now I don't want to give any problems to myself and my family members. We are a middle class people and all my parents dreams are on me so I wanna heal sir. Sir I have gone to homeopathy doctors earlier but I didn't have the courage to tell them about my problems. I have also acne in my face , but it has come really down due to the face wash and creams I apply as told by dermatologist. Bit sir I m skinny, I don't have the courage to talk with people, I have fears in mind, when I dream I dream something bad about myself, I get nervouse in front of crowd and specially when I have to talk. When I study a or do anything, I don't have concentration power to think only about that at that moment. I become blank sometimes when I be with friends or try to talk with them. I have started weight training and I love it doing for 3 months now but no use because these days I masturbate at night before sleep each day, even it has gone from 4-5 times to 1 but still doing it. I don't have the power and strength in my body as I used to have when I was a kid. Sir pls help pls. I am desperate to get heal and live a life like a normal man. I will do anything you tell, but pls help. I told this to my father then he got angry to me and gave me medicines referring to homeopathy books but I told father I would get best helps from u qualified doctors. I have searched whole of net and ABC homeopathy but nothing to my help. Pls help sir. I m building my body, eating healthy and oil free foods and supplements just that I still have the habit of masturbation and due to it many problems. I nowadays have the image and thinking of girls all the time and about porn and sex too. I have the urge to masturbate and watch porn when I am alone, be it at bed before each night, at bathroom or at day time at home when there is no one. Pls help sir. Pls tell someone what to do. I am a college student so want help from u all and be good all life. Sir I live a girl a lot but with the habit I feel guilty each time I do. Sir I wanna make my parents and my gf proud. From childhood they onlybhave seen my troubles but now I wanna change. Pls help sir pls