Been programming since 12 (now 44). I still remember the pure joy of writing the QBasic and Turbo Pascal programs to draw random colored pixels at random locations on a mode 13h or interface with a sound blaster.
Went through this identity crisis super strong about a year and a half ago.
I feel like I'm mostly over it now. The surface area of interesting things to learn seems ever expansive. It's fun to find the frontier and the spaces where the models still struggle, and then work together to overcome a hurdle and achieve something neither of us could have achieved individually.
I suppose that frontier too will thin and eventually vanish.
For now though I think it's best to take whatever time you need to be nostalgic, but then realize how awesome it is to get to be a programmer at this inflection point.