Just remember, in many fields, what man is doing today technology is doing tomorrow. With this in mind try to select something that's going to have some longevity.
Also try to select something that isn't economic sensitive.
If I were a young person looking at possible careers today I'd probably be looking at something in "senior assistance". The world is simply evolving too swiftly for aging seniors to keep up with all of the changes. I live in a retirement community and I see this every day. What I see in this is the opportunity for someone to go it on their own, get as big as they want, the ability to control their own schedule, and this is, and will be, something that is needed everywhere throughout your lifetime. And I'm not talking senior care, but rather senior assistance.