I have also dropped out twice. Once from college, and once from university. The first time was me being overwhelmed and making a quick decision to leave after getting a year done. The second time was mental health related and I got a medical withdrawal letter so I didn't have to pay the university loans since I didn't even last a semester.

I have contacted my old college prof and she is totally fine with me coming back to school to finish the program. She said she'd write me a note so I didn't have to reapply, and would start off in the 2nd year. (The program is a 2 year one so I would finish quite quickly). I will be going back to school not this September, but next September. Until then I am working part-time and slowly paying off my student loans from my first dropping out.

To anyone who has dropped out, don't waste time regretting your decisions. There is no shame in going back later to finish, or deciding that school is not the path for you.