Alan is using a quote from legendary former American Football coach Vince Lombardi as an inspiration to ensure he is ready - "Practice does not make perfect. Only perfect practice makes perfect."
Here is what Alan had to say about his final preparations:
With a few days left to the start of the London 2012 Olympic Games, I'm spending my final days working on my speed making sure that I am the fastest I have ever been.
Over the past few weeks I've worked intensely on my fitness to be the fittest I can be. I've worked on my technique to be the best technically I can be. I've worked hard at building my mental strengths to be the strongest mentally I can possibly be when it comes to my final on August 3rd. I'm practicing to be an Olympic champion.
I've spent the last four years perfecting my practice for this moment. All of this has created and built my confidence and determination that I can race to fulfil my goal to win the Olympic title. As I stand here on the eve of the biggest competition of my life I know I have left no stone, no grain of sand unturned.
Every great book you've ever read has been edited and re-edited. Every great speech has been rewritten and practiced over and over. All the best presentations have been rehearsed again and again. It's the same in every great race whether in sport, business or life.
So, enjoy winning your next piece of business, presenting that great presentation and achieving you own gold medal or personal best knowing you have done everything you could have with "perfect practice". This way you will achieve your best ever performance.
One thing you have all done perfectly over the last Olympiad is support me. In the final metres to the line the differences will be so minute that it may well comedown to who has the best support. One thing I can be confident of is having better support than any other athlete in the final.
You will all be with me in my boat on that day and for that I thank you all.
See you all after the Olympics.