First most of us here know the struggle of constantly fighting only not to get anywhere is real and makes us all want to give up. I am currently fighting the is it worth it idea right now. That being said, I give you two things to think about. 1. This sucky job, could you maybe give yourself a time limit and try to find a better one during that time frame. I did this after my son was born and had to take a job working nights at a nursing home. I told my husband it was only for 3yrs and when my son turned 3 I quit.
2. I don't know a whole lot about the Jewish religion, but doesn't God want you to trust him in matters of life and death? This is my reason for not giving up. believe me I really really want to (give up I mean). But for some indescribable reason I hold out for hope.
I don't think I helped you a whole lot, but it helped me to see this post and remember the fight may suck, but keep fighting.