Joe De Sena is the founder and CEO of Spartan, the world's largest obstacle race and endurance brand. He is also the New York Times best-selling author of "Spartan Up" and "Spartan Fit," and recently released his third book, "The Spartan Way."
As someone with attention-deficit/hyperactivity disorder (ADHD), De Sena has found it to be his greatest strength as an entrepreneur.
He says that his ADHD helped him pursue his own dreams, and he can't imagine living any other way. For him, a challenge is...
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