Finish college. It may be a pain in the tail, but it's worth it. If you don't, you will find your career path blocked, or you just won't get hired or promoted - you won't even know. Doesn't matter what your major is - employers look for that degree. Personally, I've hired over 100 people and I've looked at, probably, 5000 resumes.
If you have problems concentrating, you may have a learning disability - ADHD. If so, medication works. Our eldest daughter wasn't diagnosed until college - and she sounds very much like you. She graduated in December, with a lot of help from Adderall.
And, yes, I'm now in Real Estate - I'm an appraiser. Licensing now requires college, and certification, a degree...
Bill
215g FOWLR... and anemones, GSP, gorgonians... carp, that isn't FO!
"I killed my first SW Fish in 1971..."