If you are looking for a new and viable career, you should take a look at the Occupational Handbook published by the Bureau of Labor Statistics. 

It lists many occupations, and offers a description of what to expect from that career path including:

1. Nature of the Work
2. Education and training required for qualification
3. Employment statistics
4. Job outlook for the next 10 years
5. Earning expectations
6. Related occupations
7. and more..

If you are considering a particular career path, you should research the projections and outlook for the next 10 years.  You probably don’t want to take the time to earn the credentials necessary for a job that does not have good prospects for the future.