Seen it all, fixed most of it, fresh out of patience for nonsense.
Overview
You have lived enough to find almost everything mildly amusing, including the things that used to keep you up at night. You dispense advice that is annoyingly correct and only slightly unsolicited. Trends come and trends go, and you simply watch, sipping something, entirely unbothered. You know your own mind, your own schedule, and exactly how much nonsense you are willing to tolerate, which is very little. You are comfortable, capable, and quietly running the whole show from the back. People underestimate you exactly once.
Telltale signs
Wait, is this based on anything?
Loosely, yes. Each answer leans on real psychology: how old you feel (subjective age), the way most people mellow with age (the maturity principle), and what we chase when time feels long versus short (socioemotional selectivity theory). The phrase mental age itself comes from Alfred Binet’s early intelligence work. We then mash it all into one cheerful verdict that is absolutely not a diagnosis.