"But what goes on in my life outside of the game should be my business"

This quote by Jamie Redknapp recommends that he believes that his personal life should remain personal and not go through public scrutiny. He is indicating that his life beyond the video game should be kept separate from his expert life. This might be interpreted as a require respect for his personal privacy, as he does not desire his individual life to be judged or commented on by the public. It could also be viewed as a suggestion to himself to keep his concentrate on his expert profession and not be sidetracked by his personal life. Redknapp is most likely attempting to stress the importance of maintaining a balance in between his expert and personal life, which his individual life should remain his own business.