Mark Manson - The Subtle Art of Not Giving a F__k (2016, HarperOne) - libgen.li

Commitment gives you freedom because you’re no longer distracted by
the unimportant and frivolous. Commitment gives you freedom because it
hones your attention and focus, directing them toward what is most efficient
at making you healthy and happy. Commitment makes decision-making easier
and removes any fear of missing out; knowing that what you already have is
good enough, why would you ever stress about chasing more, more, more
again? Commitment allows you to focus intently on a few highly important
goals and achieve a greater degree of success than you otherwise would.
In this way, the rejection of alternatives liberates us—rejection of what
does not align with our most important values, with our chosen metrics,
rejection of the constant pursuit of breadth without depth.
Yes, breadth of experience is likely necessary and desirable when you’re
young—after all, you have to go out there and discover what seems worth
investing yourself in. But depth is where the gold is buried. And you have to
stay committed to something and go deep to dig it up. That’s true in
relationships, in a career, in building a great lifestyle—in everything.