Things do not happen. Things are made to happen.
To be a good loser is to learn how to win.
Always desire to learn something useful.
Be gentle to all and stern with yourself.
Without hard work, nothing grows but weeds.
It's always too early to quit.
The wise does at once what the fool does at last.
Either you run the day or the day runs you.
To know oneself, one should assert oneself.
Leap, and the net will appear.
I believe you'll develop speed via strength work which includes hill running, either repeats, or running hilly courses as the Kenyans do on a steady basis.