To me you have hit that on point

Huge ego is what makes a person to act as the king of the world and gradually drags us to what none of us want to be.... It's physiological affect that's because if the upbringings or the society surrounding by the person

On the ither hand, is you look to the strong ego that's something everyone shpuld have in them, this is what that makes people stand for themselves stand for the righteous things stand for their own sake stand for the acts that might affect his mind r body r mentally affects them.. Without the strong ego aperson won't have self confidence