Second, Self-doubt enhances performance. "What many people fail to realize is the fact that doubt, in moderation, performs a healthy function. Doubt is a psychological state that prompts us to take stock of our skills and to work to improve in areas where they might be deficient. Karl Wheatley, a researcher at Cleveland State University, argues that doubt can be beneficial -- at least in the case of schoolteachers. He points to the fact that when teachers experience uncertainty about their performance these feelings spur collaboration with others, foster personal reflection, motivate personal development, and prepare the person to accept change."
