What do I do? My husband is alcohol,gambler n has always been cheating on. He just loves to be around women.?

I hv married for almost 9yrs n I hv two kids 4 n 2yrs old. My husband has cheated me like more than 1000times. He does not let me study or do any job as he wants me to take care of kids all the time n he can gamble, drink n go to motel rooms with so many different women. My family wants me to live with him as I don't hv any source of income n it will be very hard to live by myself. I really don't want to live with him for another second. He also has STDs now. I hv done everything possible to put him on right track but he is sick n can not change. Plz guide me wht should I do to get rid of him n can live a better life without him.