I've been through a number of career changes over the years. Sous chef at a French restaurant, roofing, masonry, truck driver, moving company, auto body, IT, and a couple different corporate gigs. Currently with the same company for the last 18 years.
IMO, it's important that you don't limit yourself to only one field. What sounds glamorous or interesting on paper (or while you're in school) often ends up being completely different than what you end up experiencing. You don't always know what you'll enjoy doing until you're actually doing it. Some people enjoy working with other people, some enjoy working with their hands creating something, some people enjoy sitting behind a desk. I say get out there while you're young and get some experience doing a number of different things. Their will be ups and downs in every field, just don't be afraid to put yourself out there and try something completely different.
As long as you have a strong work ethic and you enjoy what you're doing, you'll always be successful. It's worked great for me.....so far. [emoji2]
S5 tap'n