Anxious about working

I really want to get a job this year, before the end of February at the latest, but the thought of working makes me feel awful. I already get nervous when I think about leaving the house, driving as well, but then I think about having to deal with mean customers and getting in trouble, and not knowing what to do for my job, and then having to stay there for hours and go back day after day, and all I feel is dread. I want to do this, I need the money and I think itll be good for me, but it worries me a lot.

Id really appreciate any advice!