Oh Dear! I'm 50, guess I should really have it worked out by now!
Look, everybody developes at different speeds, and finds their way for themselves. I am a retired nurse, having spent way too much time in the Army Nurse Corps, I am thrilled to be reinventing myself, yet again, as an owner (and sales rep) for a photo studio. I have held licenses for about a jillion different jobs, and certifications in twice that many. It's been fun!
Some people keep one vocation their entire life, some change once or twice, some (like yours truely) want to sample the whole buffet.
There is no right or wrong life path. You just have to find yours.
It will be ok, I promise. Just take a deep breathe and remind yourself, it's your life. You get to do things YOUR way.
The more I learn, the more I realize how little I know