Timothy Ferriss vs. David Allen

Timothy Ferriss

1977 – present

Timothy Ferriss is an American entrepreneur, investor, author, podcaster, and lifestyle guru. He is known for his 4-Hour self-help book series — including The 4-Hour Work Week, The 4-Hour Body, and The 4-Hour Chef — that focused on lifestyle optimizations, but he has since reconsidered this approach. He also supports scientific research into psychedelic treatments.