I'm not quite sure what you mean by 'peaked' (in popularity? learning trajectory? potential?) but as a long-time expat getting by in a few different countries,

I'm not quite sure what you mean by 'peaked' (in popularity? learning trajectory? potential?) but as a long-time expat getting by in a few different countries, I took a different path than everyone else I know and I feel that my best is yet to come (being a life-long learner helps). I had friends in my early-mid 20s who pretended they were 'on the up-and-up, doing big things', but that was mostly because they came from wealthy families. I never compared myself with them, though, nor with anyone (something I think everyone should learn how to do). All I can say is I've heard several times from middle-aged people that one's 30s and 40s are way better than one's 20s. Being in my early 30s, I feel more comfortable in my own skin, making decisions and being totally okay with the choices I make in the day-to-day.