The ego is essentially our sense of self-importance. It's what tells us we're better than others and that we deserve more than them. It makes us think we're invincible and that we can't be wrong. The ego can be a helpful tool when used in moderation. It can give us the confidence to pursue our dreams and stand up for ourselves.
But it can be destructive when the ego is allowed to run wild. It can lead us to make poor decisions, act impulsively, and alienate those around us.