Think of it this way. If someone puts you on a difficult mountain climb and leaves you an easy avenue of retreat, the probabilities of success would be at a certain level, say, for the sake of argument, 50%. Now suppose you are on the same mountain and the avenue of escape is removed; if you don’t succeed, you die. The probabilities of success change to closer to 100%. Why? Because you are committed. You’ll fight, scratch, invent, or somehow figure out a way to the top because you have no other choice.

The study revealed that mistakes themselves are neither good nor bad. Their impact hinges on the broader context. When incompetent people made mistakes, it just reinforced other’s already negative impressions. It was more of the same.

When competent people made mistakes, though, it had the opposite effect. Successful people are hard to identify with. They seem so perfect that it’s hard to connect. And that’s why mistakes can help. Because when otherwise competent people make a mistake once in a while, it humanizes them. It makes them more real, which makes them more likable.

The pratfall effect shows that imperfections can be an asset. But it’s actually just one example of a much larger phenomenon. And that is the value of employing emotion. Four ways to do that are to: (1) build a roller coaster, (2) mix up moments, (3) consider the context, and (4) activate uncertainty.

Since then, every time I feel I’ve made a mistake, I talk about it fully, publicly, and frequently. I quickly came to see the biggest advantage of sunshining a leader’s errors is to encourage everyone to think of making mistakes as normal. This in turn encourages employees to take risks when success is uncertain . . . which leads to greater innovation across the company. Self-disclosure builds trust, seeking help boosts learning, admitting mistakes fosters forgiveness, and broadcasting failures encourages your people to act courageously… Humility is important in a leader and role model. When you succeed, speak about it softly or let others mention it for you. But when you make a mistake say it clearly and loudly, so that everyone can learn and profit from your errors. In other words, “Whisper wins and shout mistakes.

When presented with the choice between admitting our mistakes or protecting our self-image, the decision is easy. We want to believe we are not at fault, so we find every reason to justify what we did as correct. That makes it hard to learn! A psychological bias known as the fundamental attribution error exacerbates the problem. Stanford psychologist Lee Ross identified this fascinating asymmetry: when we see others fail, we spontaneously view their character or ability as the cause. It’s almost amusing to realize that we do exactly the opposite in explaining our own failures—spontaneously seeing external factors as the cause. For example, if we show up late for a meeting, we blame traffic. If a colleague is late for a meeting, we may conclude he is uncommitted or lazy.