I have the flip side of this story. I was good friends with two musicians in the early nineties. I went to their rehearsals, hung out with their friends, and saw most of their gigs when they played out in clubs. Videos, demo tapes, meetings with managers. They spent the better part of a decade trying to make it, and while they became absolutely phenomenal musicians, they never became famous -- for the simple reason that the music industry is full of amazing musicians, only a few of whom will ever become stars.

And this isn't just the case in music. I've been privileged to know several very big writers -- people who can sustain large houses and art collections on the strength of what they've written. But for every one "star" I know literally dozens of hard-working writers for whom the career has simply not clicked. The heartbreaking thing, in both writing and music, are watching the ones who almost make it, who pour all of themselves into a project and who, for whatever reason, just don't break through for their audience.

There's a thing called "sunk cost fallacy," where you've put so much of yourself into your chosen vocation that you literally can't imagine quitting. But the sad reality for most of us -- and why inspiring stories like Ang Lee's can be more damaging than helpful -- is that knowing when to quit can put you ahead of the game.