Howard Chang was a karate champion at 17, but he derives more satisfaction from being bad at something than he does from being a master. At 17 he completely switched gears to endurance racing, a sport which he admits no natural affinity towards. He eventually excelled at that as well. Learning to fail and get back up, Chang believes,  is the key to success in any endeavor, and he is eager to practice this at every opportunity. Not content with the everyday challenges of life, Chang seeks out adversity. This gritty strategy has propelled him to high places. He is currently CEO of a Toronto ad agency which is renowned for its high standards of environmental and social responsibility.Lessons:1. The fast track to growth is to take on a challenge you're not necessarily good at and let adversity be your teacher.2. The ability to fail, pick back up and rebuild is essential in business.3. Don't coddle your kids. Teach them a work ethic while still allowing them the freedom to have adventures. Don't shield them from difficulties.