Any tips on how to deal with this??

Im still struggling on my first job , and you may think its normal ,but I fail at EVERYTHING , I feel like im jinxed , my motor coordination sucks even in simple tasks, I dont remember the prices , i feel like theres fog in my brain , and im becoming a burden , I fail multiple times per day , im so f*cking stupid .Im seriously thinking in quit

You guys have any tips on how i fix myself ?