I read on another post that an exceptionally gifted child's intellectual age is roughly 1 1/2 times their chronological age. Do you think that same formula applies to gifted adults as well?

My sister and I both seemed to descend into mid-life crises in our 30s, and now, in my mid-40s, I'm drawn to and inspired by writing by empty-nesters and reflective retirees, even though my son won't be leaving home for years, and I'm looking at at least another 20 years of work (which is both comforting and horrifying). Anyone else experience this?