I was single-minded and I had tunnel vision. Now it's time for a change.

When I'm running fast, I don't feel anything, it's effortless, it's like my feet don't even touch the ground, it's like I'm flying.

Now, I talk to athletes who answer questions with a 'yeah'. I realize I used to do that. Or they answer very quickly and you stand there trying to come up with another question to ask. I've seen both sides and it's been very educational.

Before me, sprinters retired at 23 or 24. I run because I still like it, I can make a living, and I feel I was born to do it. And because people tell me I can't do it.

I can't run forever. I decided to go back to school for my degree, because I know now there's more to life than track.

I want it all. Fame, fortune and all the commercials there are to do.

I am thrilled to be 31, still running and having my daughter watch me even if it is on TV.