I used to avoid talking about sin, now I love it!

Sin and repentence are two Christian concepts that I used to have an issue with. I was taught that sin was both like a cancer in my soul and that sinner was my identity. I used to actually believe that when I sinned god would leave me and stay away from me and my life until I repented. I used to believe that the Devil wanted me to sin and was working fulltime himself plus that he had set some of his most trusted minions to create situations for me to fail in, to fall into sin. I felt helpless...