Can you afford to quit? Without having something lined up? You mentioned you think you are going back to your ex. But you shared he is severely abusive including financial abuse. He couldn’t be relied on financially before, is he doing to support you now? Would you want to financially depend on abuser? You’d not get unemployment if you quit. Be careful just quitting like this. I’d not make impulsive decisions. I do get stressful job situation, it could be very tough