“We learn more from people who challenge our thought process than those who affirm our conclusions. Strong leaders engage their critics and make themselves stronger. Weak leaders silence their critics and make themselves weaker. This reaction isn’t limited to people in power. Although we might be on board with the principle, in practice we often miss out on the value of a challenge network. In one experiment, when people were criticized rather than praised by a partner, they were over four times more likely to request a new partner. Across a range of workplaces, when employees received tough feedback from colleagues, their default response was to avoid those coworkers or drop them from their networks altogether—and their performance suffered over the following year.”