The one word that can instantly change your mood

Late last year I bought a $6 latte from a hipster hangout, where I went to feel cool and write. When I went to take a sip after finishing a satisfying sentence, I was surprised to discover that I'd already finished it.

My fancy $6 coffee was gone. And I didn't even remember tasting it.

In that moment it struck me that I've been busy for so long that when I'm doing stuff (including fun stuff!), I'm not sure I'm actually enjoying it. I'm not "in it" somehow.