Sustainability is an art of life, requiring ingenuity and skillfulness. A man is like a forest, individual yet connected and dependent on others for growth. The fact that someone has lived for a long time is quite an achievement in the ups and downs of this often unpredictable world. After all, in the long process of life, you sometimes stumble and fall. Even at those times, you can have ikigai, even when you are on a losing streak. Ikigai, in a nutshell, is literally from the cradle to the grave, no matter what happens in your life