I think we all have issues we need to overcome ... it is inherent in the "old man". Doesn't have to be sexual sin ... could be addiction, lying, stealing, murder, etc. etc.
Paul gives us good instruction in Philippians. He had both "good" and "bad" things in his life ... stock of Israel, of the tribe of Benjamin, an Hebrew of the Hebrews; as touching the law, a Pharisee (what was considered "good" according to the flesh).
Paul also had: concerning zeal, persecuting the church (not good spiritually speaking).
However, what Paul learned to do in order to overcome and be a faithful steward of the things of God:
Philippians 3:
13 Brethren, I count not myself to have apprehended: but this one thing I do, forgetting those things which are behind, and reaching forth unto those things which are before,
14 I press toward the mark for the prize of the high calling of God in Christ Jesus.
We all have "good" and "not good" things we have gone through in our lives. We have to forget both in our daily endeavor to press toward the mark for the prize of the high calling of God in Christ Jesus.
Our walk with God is moment by moment. Hopefully each and every day our walk with God is stronger (and more successful) than yesterday and tomorrow we will be stronger (and more successful) than today as God continues to work within us to remove those things which hinder our walk with Him.
This world is designed to draw us away from Father. As we learn to rely on Him and His provision for us, we trust Him more and we learn to let go of those things which, in the past, defined us (both bad and good). We let those things go as we are continuously being conformed by God into the image of His Son. Because of the frailty of our flesh, we will never attain full and complete transformation in this life ... but we can grow and mature as members of the body of our Lord Jesus Christ and function more perfectly as members in particular, set specifically by God in the body where it has pleased Him.
I believe when we get our eyes off of ourselves and focus on our Lord and Savior Jesus Christ, all these things will just melt away. And if we are counseling another believer who needs to be delivered from whatever fleshly, carnal frailty he or she has, help him or her to keep heart and mind focused on Jesus. He is the One Who cleanses us from all unrighteousness and He will help us to overcome.