http://www.bls.gov/oco/ocos027.htm
try this site, it has a general description of hole list of careers.
Figure out where you want to be in like 10-15 years, and see if you think that whatever career path would still be interesting then.
Heres the flow chart for the ME courses needed to graduate:
http://www.me.umn.edu/education/pdf/ME_flowchart.pdf
If those courses look interesting then go for it!