Go outside, look at the sky, sit under a tree, eat some fruits. Listen to some white noise, I really like this site here
https://mynoise.net/, it makes me relax.
Did you take a shower today? When was the last time you got a haircut? Change your clothes, it'll make you feel better. Don't forget to drink water, anon. It's important to be hydrated.
Please try to think about why you're frustrated. Will it matter next year, in five years? Probably not, right?
I hope you have a nice day, anon.