What is the most pay aspect in medicine?

I am not in the medical field. But a simple advice I can tell if you are looking for the career who compensate with the most money probably you won't be happy.
The happiness came when you do perform your job with love for what you do for others and the satisfaction is enormous, but not for the money.

I have seen this many time in three people they choose o to be an engineer because of the money and they end up changing career because in the middle of the career if what not satisfy and they were very unhappy people.
Follow your heart, enroll in what you like, if you have difficulty find they are some psychology test that they can help you to find what are your skill and your strength and the type of personality you have to be successful in life.
Michelle