What's the issue - really?

Do you struggle with sin? Do you struggle with living a pure life? Well, I think we all do. What can we do about sin? Is there a "cure"?
 I came across a sentence in John Eldredge's book Walking with God the other day. It said the the issue is never the presenting sin, the isue is the surrender of our hearts. How true. If I surrender my heart to the Lord - I mean really surrender - then sin will not be an issue. If I surrender my heart completely to the Lord, the Lord will fill me with Himself, and sin will not be an issue in my life. Sin will not tempt me, and Satan will not have an open door into my life.
The enemy tries all he can to steal, kill and destroy me and you, but Jesus came that you and I might have life, and not only life in the ordinary sense, but an abundance of life (See John 10:10). That kind of life is only available when we surrender our hearts 100 % to the Lord Jesus Christ.
He is more than willing to receive us today, so why wait?