It's difficult to gather the courage needed to face a school counselor, however you are smart enough to know there is a problem to be addressed. You spent the time and energy to learn what your problem might be.
I have complete confidence in you.

If you start feeling nervous and jittery, just think of me, a frog of little brain dressed in a bathrobe and thongs with curlers in my hair and a cup of coffee in my hand.

Know that I'm on your side and rooting for you all the way.