Stressed Out

I started my first year of university this year and I'm really stressed out because of mid-terms. I literally get anxiety attacks about the amount of work I have to finish and whether I'll do good on my tests or not.

Every since high school I've placed way to much importance in my marks. It's gotten to the point where my marks directly dictate my happiness. I want to learn how to stop giving a fuck about some stupid numbers; my job experience and the knowledge I gain from the courses is what's important but I end up ignoring this and focusing on the percentages I get.

Anyone have any advice or tips on how to stop caring about the marks I get, so I can focus more on my learning? I want to be happy again!

I've never made a question on this site before but I really need someone to vent to. I literally have no friends cause of covid and I feel kinda isolated.