Very scared about missing a potential blessing

Okay...so th ings arent working out at a job of mine...working in a family business and its just not doing well...rather not get into but I feel its time for me to go...but at the same time..I feel so awkward putting in a 2 weeks notice...I kinda rather be fired.

But Tuesday I have an interview with a place paying 9.50 an hour...
Theres another place doing a hiring event and they pay 10.50( I would love to go with this one..but cashier positions make me so anxious and jittery... And I cant function. I just don't do well...

I also havr to think about me being in school soon...I ideally want one job to just cover everything...it would great if it were part time..

But yeah, I just idk which job to choose but I need one. I'm really nervous I don't want to choose the wrong job because there's only certain jobs I feel I can do . I just need one job that pays well and that I can do.