The givers end up at both the bottom and the top

Adam Grant, a management professor at Wharton, sorted workers into three types: takers, who extract more than they give; matchers, who keep score and trade favor for favor; and givers, who help without expecting repayment.

Then he looked at who gets ahead.

The givers finished last. They gave away time, missed deadlines helping others, and got burned. End of lesson -- except the data refused to cooperate. When Grant looked at the top performers in the same engineering firms, medical schools, and sales floors, he found givers again. Overrepresented at the bottom and the top.

What separated the failing givers from the successful ones wasn't how much they gave. It was whether they set any limits at all. Failed givers were purely selfless -- they ran out of resources and became easy marks for takers. Successful givers were what Grant calls "otherish": they looked for ways to help that didn't drain them completely, found the five-minute favor that cost little and helped a lot, and asked the people they mentored to pay it forward rather than pay them back.

Matchers -- those careful equilibrium-seekers -- also played a role. They punished takers by spreading reputational warnings and rewarded givers by advocating for their recognition. The social machinery around giving mattered as much as the giving itself.

Generosity, it turns out, is not a disadvantage. Unprotected generosity is.