At that age I decided to quit my tech job and live in China for an intensive language program. That opened my eyes to so many other things.

I'm currently working on learning Korean. Also working on my private pilot license. And then there is my constant work towards a sub 3 hour marathon (I'm almost there). Dabbling with music production too.

My 20s were mostly boring, but my 30s are awesome - adventurously and intellectually so. (I'm 36)

Sure, I'll never be world class at anything, but I will constantly challenge myself. That is enough for me.

My 30s were great. People stopped expecting me to grow up¹ and begrudgingly accepted that this is how things are going to be!

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[1] Or grow up again… I grew up too much in late teens / very early 20s and have been working my way down since.

That's why we should work on research & development of rejuvenation therapies applicable to middle-aged individuals: https://www.fightaging.org/faq