In 1998, Mark was a student and international rower with a fantastic job offer in London when he suddenly lost his sight. He had been on the crest of a wave as he prepared for his final exams in Trinity College Dublin in Ireland, but came crashing back to earth with the news that he would never see again. Over the next 8 years, he rebuilt his life and exceeded his pre-blindness achievements. Using insights from extreme challenges, he launched a motivational speaking business to inspire people in companies all over the world.