((((((zen)))))) Have a hug!

That should help! Just try to take things in small amounts and focus on your end goal. You can do it, you aren't in a competition with anyone except yourself (tell yourself to let you win, you're very nice, you'll do it). The whole school situation is very stressful, but think of other things in your life you've done. Take a breath and relax.
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"We can't talk at the same time! It doesn't work like that! I talk, you talk, I talk, you talk!!" ~ Peanut