Chris Guillebeau is an American author, entrepreneur, and speaker best known for his work on unconventional entrepreneurship, personal freedom, and designing a life on your own terms. He is the author of bestselling books including The $100 Startup, Side Hustle, Born for This, The Happiness of Pursuit, and The Money Tree. Through his writing and popular podcast Side Hustle School*, Guillebeau has inspired millions of people to turn their skills and ideas into businesses, create additional sources of income, and pursue meaningful work outside traditional career paths. Known for his practical and accessible approach to entrepreneurship, he emphasizes experimentation, independence, and finding creative ways to build a life that combines financial sustainability with personal fulfillment.