Richard Koch — Revisiting the 80/20 Principle, The Power of Optimistic Journaling, Studying History to Improve Investing, and The Grand Beliefs of Winners (Plus: The Toxic Beliefs of Losers) (#680) - The Blog of Author Tim Ferriss

Interview with Richard Koch on The Tim Ferriss Show podcast

The 80/20 Principle, Achieving Unreasonable Success, and More

The Tim Ferriss Show Transcripts: Richard Koch — Revisiting the 80

Richard Koch — Revisiting the 80/20 Principle, The Power of

Colleen Fuller posted on LinkedIn

Kevin Donlin on LinkedIn: The Tim Ferriss Show Transcripts

EdgeOne Medical

Yehuda Stone on LinkedIn: Richard Koch — Revisiting the 80/20

The 80/20 Principle and 92 Other Powerful by Koch, Richard

Richard Koch on Mastering the 80/20 Principle, Achieving