I hide it whenever I do something bad.
What about doing bad things makes you want to hide what you did?
I don't want people to think less of me when they find out.
It's not great to hide your misdeeds. You should own up to your mistakes and try to improve.
Nah, I'm not going to listen. It's not a big deal.
Hiding the things you've done wrong isn't noble and is a bit flawed. Sometimes letting people know of the mistakes and bad things you have done will help you feel better and move forward.