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Here is the prime condition of success: Concentrate your energy, thought and capital exclusively upon the business in which you are engaged. Having begun on one line, resolve to fight it out on that line, to lead in it, adopt every improvement, have the best machinery, and know the most about it.

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Apr 15, 2026

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Quote Author: Joseph John Campbell

Joseph John Campbell

Joseph John Campbell

Joseph John Campbell (March 26, 1904 - October 30, 1987) was an American mythology professor, writer, and orator best known for his work in the fields of comparative mythology and comparative religion.

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