Where it's mentioned
#833: Jack Canfield — Selling 600+ Million Books, Success Principles, and How He Made The 4-Hour Workweek Happen
The Tim Ferriss Show · Oct 2025 · 34:04
“so we created what we call the rule of five it's a book by john kramer called the how to sell a million books something like that ” ▶ tap to hear this moment · 7s
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