Should I bite my nails and cuticles? I also pick my nose.
Those are some pretty bad habits, why do you do those?
I think they're just things I do when I'm nervous.
It's understandable to have some things you do when you're nervous but picking your nose is kind of gross and biting your nails is a really bad habit. I'm sure if someone saw that they would think differently of you.
I've been picking my nose since I was a kid and it's just a habit. Lots of people pick their noses. It's natural I think.
You should try to grow out of those child like mannerisms. Maybe try to force yourself to do a different habit to help you deal with your nerves, like spinning a pen or flipping a coin.