One of the most unprofitable profession nowadays is the jeweller. This requires a lot of expenses, but very little return, so it't nor profitable.
The butcher's profession is poorly paid as well. But, instead, he can eat as much hamburgers as he wants
Being a lawyer is not too profitable, because you have to study a lot, but, the students are not ready for this. Still, in USA lawyers request from 50 to 600 dollars.
Business consultants receieve up to 200$/hour. This consultants are very experienced, and that's why people indeed receive teh necessary information.
Financial directors of banks/holdings receive very high salary.
The highest salary is established to entrepreneurs and directors of the own companies.
The most expected professions in the future are: software developers, college professors, administrative financial assistant.
So choose your best