Hello My Name Is Anthony L, A Freshman In High

Hello My name is Anthony l, a freshman in high school and working on a project that consists in the medical field. That is why I decided I needed some info from a doctor and answers for my five questions.

Those questions would be:
How many years did it take you to become a doctor?
Any hardships you've faced along the way in becoming a doctor?
Do you enjoy your job?
Was there an area of study that you were fascinated by?
What are the benefit factors of being a doctor?