I've read this before, but it's worth re-reading:
1. Run twice a day, as many days as you can. Hopefully five, six or seven days a week.
2. Run more. How much? I don’t know. You figure it out, but find out for yourself.
3. Run it faster.
4. Love running and LOVE racing.
5. Stay focused.
6. Set goals and don't be afraid to fail.
7. Listen to your body and don't be afraid to rest.
8. Compete WITH your comrades in sweat - never AGAINST them.
9. Smile a lot.