Husband wants divorce & wife is not ready to give divorce

Hi there, I married before four years . And have a child of two years . From the day one of my marriage my wife used to fight with me as we have very less understanding between us. Gradually my wife have started doubting & blaming on me about my extra-marital affairs. she always tried to humiliated me, my parents and our reputation in society. Recently my wife went to her parent's home for holidays; from there also she used to do doubts and all the things. Than i have decided to not to bring her back into my life as we are never going to live a happy life together. So from last 3 months she is living at her parents home and harrassing me mentally. After than, when i asked for divorce than she refused for the same and she asked me to take her back at my home. She said she doesn't want alimony or doesn't want to file a case to court; but she will also not give divorce to me ever at any condition and said she will not let me go ahead in my life as her revenge. Now i want to move ahead in my life so, How can I get DIVORCE from my wife?? Will I get my child's possession? And is there any kind of compulsion for giving alimony ?