Tim Ferriss Quotes
This is not my phrase, but if you're stuck in the past, then you're depressed. If you're stuck in the future, then you're anxious.
Citations
Ferriss, Timothy. Tools of Titans: The Tactics, Routines, and Habits of Billionaires, Icons, and World-Class Performers. Houghton Mifflin Harcourt, 2016.
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Timothy Ferriss is an American entrepreneur, investor, author, and lifestyle guru.