Why not getting a job with flexible hours or even something in shifts. This will get you paid rather well and if haven’t got a wife or kids for the moment use your spare time to study.
I’ve known a security guard who only worked nights, very well payed. As nights are call he used it to study.
Many possibilities all depends on your willingness and personal situation. You do not always have to throw money against something to succeed.
Like mentioned in previous posts. You really need the obsession to become great and that will take some years. Do kot expect the big $$ in the beginning.