I don't know if it was adulhood, but after 30 I started feeling calmer & more adult than before.

There was no special event in my life that kickstarted this, it was tge beginning of a more mature way to look at things & people. I started to see some repeated events & behaviours that I had already experienced and this also contributed to have a more tempered way to manage things.

As you age of course you still face unknown things, but you star to see that supposed new things rhyme with things you already know.

So midlife crisis has not hit yet.