Okay thats good thanks

I just need to know how to calm myself down. Because I'm pessimistic, its just what I am, I don't know how to change it and dealing with depression so its all not good. HSC is placing so much stress on me and I just get upset so much when I get my mark back and it doesn't show my effort. then theres someone next to me (usually my best friend) who's going on about
"Oh I wish I did better," and she tops the year... My emotions go haywire... ><