Hi there, I'll try my best to help so here are my two cents. I think you should keep in mind that you'll get a better job once you finish these classes. The rewards that you will receive is something you want to pursue, they should be your motivator. Also, I want to remind you that not everyone will treat you the same; the people from your old workplace compared to future people won't be the same. I believe you can overcome and conquer these negative aspects that are stumping your strengths and become the best version of yourself while improving your self-esteem (it may as well be a small or big change, but you'll look back and see the improvement)! However, it's going to be a rough journey depending on your situation, but I know that you can pull through and make the best out of your situation. As for your classes, tackling it day by day is the best thing you can do right now. If there's anything difficult to understand, Youtube always helps me out whether it's self- or school-related, so it may help you. However, I just want to let you know that if anything proves itself to be too stressful or hard, it's alright to quit and start somewhere else (but I don't know the circumstances of your situation, so I'm going to assume). Thanks for hearing me out~