I do. About every 5 minutes.
I've stopped stressing about sin though.
God knows I do it. I know I do it.
For one thing, temptation is not sin so I don't need to beat myself up for being weak when I get tempted. I just say, "Nope, not going there. Get out of here."
And if I do sin, I see it as evidence that God is working in me, showing me stuff so I can confess of it and repent of it and we can work together on it to over come it.
But I also know, and He also knows, that as long as I'm in this body, I WILL sin. It's going to happen, so I thank Him that He chose to save me anyway and is working on me to over come it all anyway.
He isn't looking at me as I see myself. He sees me clothed in the righteousness of Christ and the finished product to the praise of His glory. He's looking at what I can become in Him, what He's making me in the new man, not in the flesh which has been crucified with Christ.
Sometimes I thing we expect more of ourselves than God expects of us, that we set higher standards for us than He does.
I know that I am much more forgiving of other people than I am of myself.
Hang in there, brother. He's working on you and not discouraged with what you think are setbacks.