You've been active duty as an jet mechanic, avionics guy, seat mech, parachute rigger, or even as airframes. Your clock is ticking and even though you're nervous, you are ready to either retire or separate. Whatever your reasons for beginning a new adventure, congratulations!
If you asked a room full of people, "Who loves failing?" Silence would probably ensue. Quitting, failing, or not starting are some of the most uncomfortable topics for anyone ever.