Gal 2:21 Therefore, I do not treat God's gracious gift as something of minor importance and defeat its very purpose; I do not set aside and invalidate and frustrate and nullify the grace, unmerited favor of God... If the Apostle Paul, himself, said that he did not take the grace of God in vain, how much more should you and I not take it in vain. In every situation we are faced with a choice, to do right or to do wrong. The grace of God is there to give us the under girding ability, but He will not make the choice for us. Paul did not expect God to do everything for him without doing his part too. God has all the power, strength, ability, and everything we need to overcome temptation and sin, but He still left the choice up to you and I. It may take time to deal with those habits and deep-rooted sins, but if you keep making the right choice, God's grace is sufficient and able to help you overcome.