Hello Ssigros: Thanks for sharing your story and... welcome to PsychCentral!

I hope you find PC to be of benefit.
Since school & work are two things that are of particular concern to you two forums, here on PC, that may be of interest would be the school & study forum & the work & careers forum. Here are links to these forums:
https://forums.psychcentral.com/school-study-issues/
https://forums.psychcentral.com/work-careers/
Here are links to some articles, from PsychCentral's archives, on the subject of how to cope with stress & anxiety:
https://psychcentral.com/stress/
https://psychcentral.com/lib/5-steps...g-and-anxiety/
https://psychcentral.com/lib/15-smal...dium=popular17
https://psychcentral.com/blog/11-tip...anage-anxiety/
https://blogs.psychcentral.com/life-...dium=popular17
https://psychcentral.com/lib/9-ways-...ere-right-now/
https://psychcentral.com/lib/top-10-...s-for-anxiety/
I'm sorry you feel the walls are closing in on you.

Hopefully coming here to PC can be of some comfort & support.

There's a lot of support that can be available here on PC. The more you post, & reply to other members' posts, the more a part of the community you will become. So please keep posting!