When people ask me what career they should pursue, I point them to the US Dept of Labor's Occupational Guide first. Just Google it.
This results from surveys to determine what jobs exist, what qualifications are required, how much they pay, what the likely future is for the occupation, etc.
Then I suggest they assess their personality to be certain they aren't heading for disaster. For example, most engineering jobs require that you be a good team player. If you hate working with other people, engineering might be a poor choice for you.
If all else is equal, choose the occupation that pays more. If you feel that you have to choose between two careers that are both attractive to you, go for the gold.
Finally, be careful what college advisors or military recruiters promise or suggest. They are commonly not unbiased. Seek opinions from people already working in the area you are interested in.
I am often astounded at how people choose what career to enter - almost by throwing a dart. Before you spend years of your life entering an occupational area, spend at least a few weeks
actually investigating what is true about the job.
I am often reminded of a Harvard-trained pathologist I knew who confided in me that he hated medicine. I asked him why he didn't quit and do something else and he told me he felt that he had already invested too much in it.
Don't ever be that dumb!