West Ham defender Matthew Upson believes he's a far better player than when he won his last England cap in 2004.
"I won caps and played in competitive internationals but I was not the finished article. I was not at the level mentally that I am now.
"I was at a point at Birmingham were I was doing OK but not stepping up to the next level. I want to get the best out of my career and I want to play for England again, so I needed to change things.
"That is what I have done and I think it is paying off.
"I speak to a psychologist a lot and we analyse everything, my behaviour, training during the week, everything.
"As a young player I did not pay too much attention to psychology. I don't think it is something you do unless you are brought up in an environment like Tiger Woods or Lewis Hamilton, sports stars who are groomed at a young age to be mentally so advanced.
"But psychology is a massive part of the game, just as much as physical training."