“Mind is the Master power that moulds and makes,
And Man is Mind, and evermore he takes
The tool of Thought, and, shaping what he wills,
Brings forth a thousand joys, a thousand ills:—
He thinks in secret, and it comes to pass:
Environment is but his looking-glass.”
-author: James Allen: As a Man Thinketh
It might sound like a new age concept, thinking yourself well or ill, based on the type of thoughts you allow to dwell in your mind, but the poem was first published in 1902.
If you have time to enjoy a charming read, crafted in “olde” English, you should read the full text of Mr. Allen’s wonderful summary of using mind over matter in one’s life.