Former manager Sven-Goran Eriksson created a stir in 2006 when he selected Walcott, then only 17 years old, in his squad for the finals in Germany.
The youngster did not get a chance to play during the tournament but recorded his experience on a video camera.
Having recently re-watched the footage that shows him becoming dejected after realising he was not going to play, Walcott will be using the video diary as inspiration to make more of an impact if he is included this time round.
He told The Guardian: "I was bubbling pretty much every day at the beginning but then you can see my morale going down, lower and lower, because I came to realise that I wasn't going to play.
"It's a good watch and I saw it a couple of months back. I would record the paparazzi and all sorts of people.
"It motivates me, of course, because you want to do better the next time.
"If I get the opportunity to go to South Africa, I want to go further."
Much has been made of the pacy winger's role in the national side and whether he is best deployed as a starter or impact substitute.
But although Walcott admits he wants as much playing time as possible, he will be satisfied as long as he is able to make a major contribution.
"It doesn't matter if you start the game, as long as you finish it well and the team wins, that's the main thing," he said.
"But you want to play all the time.
"The season hasn't gone as I wanted and it's been very frustrating.
"I also think I've put too much pressure on myself to be straight back to my best after my injuries.
"If you try too hard, it's never going to work."
He added: "You can be the best player in one game and then the worst player ever in the next.
"But I just concentrate on the fact that if you are quiet, you can have five minutes in which you can make the difference, or even one cross that someone heads in. Everyone just remembers that."