Many make their decision for Christ by what they see those that claim to be Christians do. Many are turned off to Christ by what these Christians do. Being a Christian carries a responsibility. You are a representative of Christ. A Christian is Christ-like.
Sin is sin.
Your prayers go no higher than the ceiling when ther5e is sin in your life. But among the upright there is good will. Ask Him to help you overcome any sin in your life. I tell you that in the same way, there will be more joy in heaven over one sinner who repents, than over ninety-nine righteous persons who need no repentance. Every Christian's goal should be to over come the sin in their life for there is a glorious promise made to all overcomers.