As a goalkeeper you need to be good at organising the people in front of you and motivating them. You need to see what's going on and react to the threats. Just like a good manager in business.
To play in the World Cup and try to win something for England was the ultimate.
There have always been card schools at football clubs and always will be.
Being fit will keep you mentally sharp and people forget that.
If you stand still there is only one way to go, and that's backwards.
I'm still very professional about my fitness. I stay in trim as I always did.