Sometimes I struggle to figure out what it is "I know" and what it is "I believe". But to paraphrase one of my favorite movies, Amazing Grace, there are two things I know for certain: I am a great sinner, and Christ is a great Savior.
I have hope in Christ. I have hope he can even help me overcome myself. And that's a sincere testimony. There's a lot of truth to the saying that Christ's Church is not a museum of Saints, but rather a hospital for sinners.