When you look and sound confident, it communicates competence. The opposite is also true: When your voice wavers, you slouch, and you avoid eye contact, you come off as unconfident, and people can lose faith in your abilities. But often, the easiest way to appear confident is to fake it 'til you make it.

Giving good feedback is hard. A common pattern we follow—especially when we have to give negative feedback—is starting with something positive, addressing the problem, and ending with something else positive. But it turns out this "feedback sandwich" method isn't the most effective. Here are some better ways.

Organizations that refuse to change will get left behind. But at the other end of the spectrum, too much change is also harmful. Revamping everything you do at once creates stress and can lead to your efforts failing. The right balance is shaking things up just often enough to experiment with new ideas.