Are you saying you must stop doing what you're doing now, if you become a Christian? That means you know it is wrong. Let me ask you something. If you were to become a Christian, and God was to live in your heart, and you looked back upon your life, would you say to yourself now, "I did a lot of things I wish I hadn't done?" Probably so. The Bible speaks about just such a thing. In Rom. 6:21 it says, "What benefit were you then deriving from the things of which you are now ashamed, for the outcome of those things is death." What you are saying is that God will require you to give up certain things that you like to do. Since God only wants what is good and right, and you say you don't want to give up what you are doing, then you are saying you want what is wrong.
Will you let your pleasures get in the way of salvation? Is your life of sin worth an eternity of pain? Jesus said, "What will it profit a man if he gains the whole world but loses his soul?" (Mark 8:36).