Taking a course like Outward Bound is always useful.
Remember everyone else is shy too. Someone has to break the ice... may as well be you.
You miss every opportunity you don't try.
You won't see what's on the other side of the wall unless you climb it.
You will be dead soon enough, stop wasting time and get on with being you.
If you act like you're in charge, people will be inclined to believe you actually are.
People are natural followers looking for a leader. May as well be you.
Read "How to Win Friends and Influence People" by Dale Carnegie. It's at your local library.
You are worthy. Keep reminding yourself of that.