"What is the biggest obstacle that you have had to overcome in the Channel"
This is what he replied
"The biggest obstacle - the mind. Fifty per cent of a successful Channel swim is willpower, 25% swimming ability; 25% fitness. If you don't want it enough and you crack mentally, you won't do it. You will be exhausted. You may be sick. You may think you are never going to get there. But if you are determined enough and keep putting one arm in front of the other, you will get there. However tough it gets, remember, the discomfort is short term. The achievement lasts a lifetime."