G. Mark’s Answer
Well, here I go again with this bit of advice many folks may be tired of hearing from me. However, this is what I've found to be tremendously valuable and at the same time, really, really easy. Career paths are often chosen for what I think can be wrong or at least insufficient reasons. Salary, prestige, pressure from family and friends or simple convenience. None of these should be ignored. However, as I've told many of my students, you'll tend to be good at what you like and you'll tend to like what you're good at. And end result is win-win for you, for your friends and family, and for folks who use what you provide them.
The trick is to find out what you're suited for so that marriage between your personality and your career can result in the most happiness and success. A Personality Assessment Survey test, like RIASEC, can be obtained from school counselors or employment advisors or from searching the internet. The test is essentially a bunch of questions that match your responses with those of folks who are happy and successful in various fields. The test is fun, easy, interesting, and the results can be surprising. And can guide you into a career, which classes or other training you're likely suited for, and go a long way to maximizing your long-term happiness. It also gives you more confidence that what you're investing so much time, effort, money and emotion in is being invested wisely.