One thing I wish more students knew is that you don't have to feel ready to give something a try.
Speak up in class. Join that competition. Give the presentation. Ask the question. Take the opportunity, even if you're a little nervous.
You might make mistakes. You might not perform as well as you hoped. And honestly, that's okay.
Every time you step out of your comfort zone, you learn something about yourself.
Confidence doesn't always come first. Sometimes, you build it by simply taking the chance.