To mortify a sin is not utterly to kill, root it out, and destroy it, that it should have no more hold at all nor residence in our hearts. It is true this is that which is aimed at; but this is not in this life to be accomplished. There is no man that truly sets himself to mortify any sin, but he aims at, intends, desires its utter destruction, that it should leave neither root nor fruit in the heart or life. He would so kill it that it should never move nor stir anymore, cry or call, seduce or tempt, to eternity. Its not-being is the thing aimed at. Now, though doubtless there may, by the Spirit and grace of Christ, a wonderful success and eminency of victory against any sin be attained, so that a man may have almost constant triumph over it, yet an utter killing and destruction of it, that it should not be, is not in this life to be expected.
~John Owen~
Overcoming Sin & Temptation (Wheaton, IL; Crossway; 2006) p. 70-71.
The Old Guys 
…yet thou hast made me a monument of mercy,a trophy of redeeming power; in my distress let me not forget this.