Superman and Kryptonite

Superman and Kryptonite. In Superman's story, he is invincible, immortal, and super-powerful, but there is one weakness, namely Kryptonite, which makes him weak, and dies. Is it interesting if Superman can not lose, can not die, and always succeed at any time? In our lives, there is always our "kryptonite", the weakness and fear of failure that makes us think twice,