You can be an Olympic champion in 9.5 secs, but to be the greatest, there's more to it. It takes a bit of forethought and a lot of mental application.
If you work hard in real life, people tend to get in your way - either from inertia or prejudice - and they stop you achieving things. It's the worst thing about real life compared with sports, where you generally get what you deserve: if you're the fastest guy, you win; there are no other games being played.
Kids are starting at such a low base rate in terms of fitness that it's taking them years to catch up to where people like me started from. Every little bit is making it more difficult for kids to succeed on a world stage.
I think one of the things about being a good coach is to recognise when you have given all that you can. In fact there should be some sort of unspoken law that says that a coach cannot have anyone for three or four years - if you have not passed on most of the stuff you know in that time, then you are not doing a good job.
In sport, if you want to be the best you have to compete against the best - I would much rather have come tenth and be judged against everyone than come first and be judged against just a few.
We crave instant success these days. If you are a really good sprinter and long jumper, you don't want to spend two or three years on a whole new set of events. You're used to doing well and it's difficult to give that up.