I’m an Assistant Store Manager, but want to change my career and go back to school, but to do what?

well, few things about my self, I’m, 30 going on 31, I work as an Assistant Store Manager for a Major Supermarket chain, I make 42,000 a year with benefits, never finished college because of this job. it is stressful, full of drama and brought me nothing but headache, but its a Management position. [...]