cardiologist make great money.

That is a very broad question and should depend a lot on your preferences and goals – any physician working in a hospital will have a lot of patient contact – the ones that don’t teach or to a lesser extent, do research. A position where you are oncall, surgical specialities, and other areas that are becoming more and more prone to malpractice lawsuits and the like will be more stressful. As far as salaries, specialties with increasing demand such as geriatrics and orthopedic surgery may pay more rather than general fields like internal medicine or family practice. Granted that if money is at all a motivating factor, medicine is not something to go into unless you have other strong motivations for the career itself. Most medical students I’ve known finished medical school with a debt in the six figure range – and when they do their residency training afterwards, they get payed around $35-45K which is the average today for a recent graduate with a Bachelor’s degree.

It sounds like you shouldn’t be a doctor…

if those are your motivations, then you’ll likely not make a very good doctor