This is the ultimate lesson, especially if you're in a for-profit venture. That is what I have learned from decades of working: Never do more work than the minimum that is expected from you.

It isn't as bad if you work at an NGO or in public service of some type, because at least the fruits of your labor don't go directly into the pockets of uber-wealthy CEOs. But if you're in the private sector, fuck all that shit.