How to get divorce if wife is not agree

Hi I married a girl in 1999 as arranged by parents. that time my age was 17 and my wife age was 13 years. Our marriages life is very painfull. We are totally different each other. Since then we are always stay alone. Some time we come together for son time and again got separated for some time. It's happening dincev2002 till now During this period we have 3 kids as well. During this long journey I think this is not good for life time. I stay alone in different sort since last 11 years and my wife stay with my parents with kids. Hardly we meet each other when I go to my parent place. It's very painfull for me. Several times I tried to get my wife in my life in the city where I work but she always fight with me an went back to my home town. And always fight with me and blame me lots of things. We don't chat each other for almost 6 to 12 month each other. Now I have decided to come out from my this pain full life But my wife is not ready to divorce me. She always raise doubt on my character but not ready to go out from my life. Please suggest me how I can come over this situation becoz a am totally dissatisfied with her activities. She slways spoil my character between my family and relative's. This way my health is also become bad. My BP is also get high due to this behaviour of her. Pls make a way to divorce with her.