Not going back to the previous job and find the new one? vs take all of it?

Now, In my life, I have the following choices

1. Going back to my old job(Dentistry) in order to make a living
2. Not turning back or lose any time but continue on the same direction of trading and programming
3. Reading all of them(Dentistry, finance, programming) by all the time with my new portable 7 inch e-reader

I think my old work(Dentistry) was not that bad(I don't hate it), and some time it can be fun if I read all of its textbooks.

For Trading and investing, it will be a path to my financial freedom (or broke)?

For programming and innovating, it will be my life.

I want to take all of them.