I’ve been worrying myself sick

I know that it’s only summer and I should be focused on my summer classes starting next week. Instead I’ve been stressing myself out over school this fall. I don’t want to stress myself out like I have been. Its just that I’m so afraid of failing that its hard to keep my mind off of it. My parent’s have faith in me that I’ll do fine, but me on the other hand have doubt. I’m taking History, Biology, Economics, Government, and College Algebra. I need to work on this summer and not think about it anymore and cross that bridge when I get to it. I’m sure I’ll do fine. I just have to work and study hard. I don’t know why I’m so afraid maybe because I am constantly worried about something. Trust me I don’t try to worry or stress myself out – it just comes naturally for me.