When it is real, it needs no validation. Those who are confident do not feel the need to put others down. They are far too busy getting things done.
Those who can rely on themselves still benefit from help. The world is a cold place when one is alone. It is even colder when we make ourselves thus.
If you put others down, do not be surprised when they do not lift you up. One cannot rise on an inflated ego. Air between the ears is good only for storage.
The arrogant loudly tout their importance. They are not known for accomplishing anything. But they will expend effort to destroy what others have built.
Mere confidence is enough to blaze a path into the unknown. We need only the assurance that success is possible. It gives us the energy to make it happen.