Confidence is extremely important!
Ridicule and criticism can sometimes motivate people, as no one is perfect, and reflecting on one's shortcomings and mistakes is necessary. However, ridicule and criticism can also undermine one's confidence. Because the way of them is often comparing you to others. In the World, there always is someone better than you. Then, if you often compare yourself to others, leads to a lack of confidence. Once a person loses confidence, they feel insecure, anxious, lack initiative, and may even become self-destructive.