If I had one piece of advice for someone trying to pick a career, it would be to require that they shadow someone actually in the professions they're considering.
Doctors: you may spend many many hours in front of a mobile computer entering notes, medications, etc. You may also spend a good deal of time fighting insurance companies via email and/or phone. It's likely you feel you are rarely "helping people"; sometimes you have to help people in spite of themselves. Also patients rarely do what you tell them to, contrary to what you judge to be in their best interests.
Lawyers: you may never see the inside of a courtroom or even a client. You likely will spend the mass majority of your time using Microsoft Word redlining documents. Trial drama is the exception of the exception.
Many jobs are not what people think they are.
I like this way of thinking.
Musician: you may never make it “big.” You might be making close to nothing in bars and other venues and only during later hours. People love covers even if you love your originals. Travel is brutal. Irregular hours make it harder to interact in the regular hour parts of life.
When I started college I thought I wanted to work in television production. One semester of interning at a local TV station cured me of that.