You don't need a CS diploma but you need to know how to program. You'll get either a take home project or white board problems during the interview. If you can pass those, you aren't lazy, and you aren't a jerk you are hired.
By all means take courses. But before you quit to just take time off and self educate, read the long threads on here about what it is really like out there in tech hiring.
Be prepared not only to be good at programming, but great at tech interviewing which is not the same.