ABOUT THINGS THAT HAVEN'T EVEN HAPPENED - and probably won't. How silly is that?
I failed 3 years in vet college because just before the exam i got so afraid of it that i didn't even go, but i realized something, if we don't try we will never be able to achieve anything, i always try now, even if i don't get an A i can still get a B.
What i normally use to get me out of that spiral are previous memories, remembering all my friends going to the next grade and me stuck 1 year before them, remembering ppl making "fun" of me because of it, etc... when i start remembering all these things i get angry and that is when i shine the best, i'm like a sith i use the dark side of the force in my favour xD
You learned your lesson well, it seems. And hey, anger isn't always bad as you know.