Scared again

I have been accepted to Central Michigan's REU this summer. I have decided to spend 2/3 of my summer doing research in math. Last summer I went to a math program and was scared out of my mind. Even though this will be the second summer of going to a math program, it is different and I have no idea what to expect. I am scared out of my mind again. At least as Julie told me, I have done the hardest part of getting in. Now all I have to do is show up for the eight weeks. It is a long time from now, so maybe by the time I get there I will calm down....right?