Hello and welcome! I thought the first reply to your post was well-put. The truth is, I struggle with my own sins...and other people have their own battles, as well. I'd say the church is a hospital for the sick, not a house where righteous people come together to talk about how they are now superior to others.
But, with that said, all sin will kill the soul. Mine. Yours. My neighbor's. The homeless guy in the park. Your concerns are sincere, and I'm going to give you a sincere answer. Whatever your issues are in life, come to the cross as you are. Once the Holy Spirit begins to work within you, you will adopt a new mind, as do we all - and that mind is Christ's. After that, the progressive change begins, as long as you call all sin by it's name, and pray fervently to have it removed. If you want any error in life gone, genuinely...it will be taken away. The key is to have a perfect hatred for the sin itself.
God bless, and I'll pray for you. Keep us in the loop on your experiences!