((((((Purple))))))) It's never too late to start over and I can relate about the feelings of failure (I've been there and it sucks!). The good part is you have a plan. You quit the job that was toxic for you. You are starting school/class (I am too btw and I'll be your pocket rider if you need one).
Remember to breath. I too feel in turmoil on the inside and need some reminders to calm down, focus, breath and it will be ok. Will you be my pocket rider?
Wishing you comforting thoughts and many hugs.