"I don’t miss working, but I do miss feeling as if I was working towards something, something with meaning, something with a degree of weight and importance to it."

I hate to tell you this, but the time to decide to pursue a career in something meaningful was when you were in high school. That boat may have sailed. All of those other kids who studied, did their homework, racked up activities, and got 4.0s were doing that boring stuff for a reason. It gave them some choices later.