He, who has so little knowledge of human nature as to seek happiness by changing everything but his own disposition, will waste his life in further efforts, and multiply the griefs which he proposes to remove.
Dr Johnson
Or, as Michael Jackson once sang:
If You Wanna Make The World
A Better Place
Take A Look At Yourself, And
Then Make A Change
Man in the Mirror
Nothing much I can add to that, really.
Happy Saturday!