Hi P.,
My hubby and I have both made drastic career changes in our lives (me 2 years after I finished my first degree; my hubby now).
Both of us found our new area of interest by, first, deciding on a general area of interest (for me, medicine; for hubby, business). We then went to different local universities and spoke to counselors about our specific interests (I did not want to go into nursing, or be an MD; hubby had no clue). The counselors were able to describe specific degrees and tracks of education, offered at their schools, which fit our interests, and personalities.
Hey, good luck!
t