Adventure athlete Mark Pollock has won Commonwealth Games Medals in rowing.
And completed six marathons in one week in China 's Gobi Desert .
And raced a marathon at the North Pole and on Everest.
And competed in Ironman Switzerland and the Dead Sea Ultra.
These are amazing challenges.
It's even more amazing when you consider that Mark lost his sight in 1998 at the age of 22.
If you want to find out how you too can overcome life's challenges – just like Mark – read on.
His book, Making It Happen!, is a practical, user-friendly guide which challenges you to stop making excuses, to identify what you want out of life and to start "making it happen".
Mark's blog keeps you up to date with his latest exploits in sport and business and introduces you to some of the people that have managed to capture “the feeling” experienced through redefining what's possible.
Check out his video diaries and watch how Mark overcomes the challenges of racing in the Earth's toughest environments.
To find out more about Mark and his incredible story, listen to the man himself recount his triumph over adversity here.