It had been years since I'd read a Malcolm Gladwell-type book synthesizing research into pop science life advice. This was a pretty good entry: readable, short, interesting anecdotes. I tilt heavily toward being a generalist and this book praises that approach so it was satisfying in an intellectually-lazy way.

Reply All podcast did an episode on why diverse teams get better results, this felt similar (but applied to a single person, essentially making the parts of yourself and your life more diverse).