I am 16 and for some reason wildly anxious about saving

Genuinely how do you do it?!

My parents hand me a non fixed quantity of money every month to spend on school food and I anxiously save more than half of it always instead of eating at school. I now have a great quantity of money that I can't for the life of me bring myself to spend on anything that I am not obligated to at the moment.

I am not poor, there's food at home, I just feel really really really bad if I buy anything that isn't for my immediate needs. It's ridiculous, I don't even pay bills, so why dude, why? I can't begin to fathom how financially independent people don't spiral into insanity. What if I need this later?? What if, what if, what if..

Some weeks ago I went to a concert in a bar with my mom and she forgot her card and I had money to pay for everyone and still have good money left afterwards but having spent barely anything there made me so deeply stressed even when I was paid back for stuff I lended money for I still felt guilty. What if the monster who eats money visits my bed at night and eats all my money and then I have to live on the streets and find a way to die without a gun dudes oh my god

I don't know how to stop being dramatic about this