Helping people does not depend on the profession, but rather on the person.
Anybody can help other people. I have heard of tradies who regularly do discounts for customers who are pensioners. That's a form of helping people. I have seen teachers who deeply care about their students. That's a form of helping people. What about those engineers who design roads so we have efficient transport? That's helping people.
At the same time, I have heard of doctors who have been embroiled in legal trouble for questionable conduct, being pervs and looking/feeling females for example, not to mention doctors who are money obsessed and don't care about their patients.
Don't be fooled into thinking that if you're in medicine, you're helping people. Helping people comes from the heart and no matter who you are or what you do, you will have the chance to help someone else, whether you are a plumber, an engineer, a teacher, a social worker, a computer programmer, a dentist or a doctor.