The law of the existing outer world is change, it is completely unpredictable. If one creates even the slightest attachment, that is, dependency in this world, then sorrow is guaranteed.
At present we are subservient to this world that is constantly changing and our quality of life is diminished. We have the option to go into this world as detached observers; a guest that owns nothing and who creates zero expectations. Such a person experiences a rich inner life and is useful to himself and to others.