What do shipwrecks, shark attacks and catching your own dinner have to do with business advice and entrepreneurship?

The answer is: Everything.

For 30 years I have navigated the world's oceans in search of fish. My adventures have taken me to the waters off South Africa and Central America where I speared giant tuna on a breath hold, to the islands off the California coast where I wrestled heavy cod traps in 20 foot swells, and to other Pacific fishing grounds where I racked up boatloads of fish with rod and reel.

After a catastrophic ocean accident nearly took my life and that...