Careers worth preparing for?

This list of 25 occupations that are projected to become obsolete services soon got me thinking about how quickly our world continues to change. Curious to hear people's thoughts after looking over these careers potentially drooping out of viability soon. What might be next? Are there new opportunities being created as quickly as old ones drop out? As populations continue to increase while efficiencies and technologies mutate our employment landscapes, what are the implications in the short or long terms?