Good luck, Billy!
One thing about going back to school later in life (30s for me) was that I was doing it for "me", and pursuing a career that I absolutely love. None of this "for God's glory" or "advancing Kingdom interests" bull$h!t. The tough part was being 10 years behind the 8-ball in terms of seniority and on the paygrid at my workplace, in comparison with other people in my age group. I won't retire with a full pension, but I'll still have a pension and the ability to retire when I'm ready to do so.