How to Build Confidence

In the HBR Blog: How to Build Confidence. " ... Very few people succeed in business without a degree of confidence. Yet everyone, from young people in their first real jobs to seasoned leaders in the upper ranks of organizations, have moments — or days, months, or even years — when they are unsure of their ability to tackle challenges. No one is immune to these bouts of insecurity at work, but they don't have to hold you back.... " .  Confidence is important, and you also have to know what you are doing.