Tell me honestly, do you get the impression that I'm a bad person?
Not really, but why would you think someone might get that impression of you?
I can't tell whether I'm a saint or a sinner
If you think that you are bad, you should find a way to become better! I know that you have it in you to be a good person!
I guess I'll see what I can do. I appreciate the confidence, but you're being a bit mushy about this.
I'm glad you're willing to try improving yourself. I'm sure you'll find that you're a better person than you think you are.