A man who lost everything to addiction becomes an inspiration to many
Meet David Clark, a man who lost everything to many addictions -- all by his mid-30s, but today is a thriving inspiration as a best-selling author and endurance athlete. He has run all sorts of races, overcome the impossible and now, he's preparing for an event that's less about him and more about helping others, especially his dying father.
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A man who lost everything to addiction becomes an inspiration to many

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