How to Keep Motivated

Today:
Distance: 14.3 km
Time: 77' 14"
Rate: 5' 24" per km
Weather: sunny, temp 12 degrees, humidity 75%, wind calm
Week: 59.4 km, June: 321.25 km
Year: 2177.3 km in 25 weeks at ave 87.1 km per week

I received an email today to ask how I keep motivated to run day after day. A strange request from some one who has tons of ability to run long and hard.
The answer from my point of view is to have a focus, a purpose to get out and do the hard yards, especially in winter. Basically I don't usually run just to run, but with a purpose to an end goal. It doesn't matter how far down the line that goal is, as long as it's there. Then I break up the months and weeks leading to that goal and work backwards. A few races or events in between lets you know how much progress is being made.
Draw up a plan however basic and try to stick to it. Having a partner(s) to join in makes it a bit easier. Writing a blog or recording your activities helps as well.
Today, I ran home for lunch and back to work, and answered the email. Nice day after morning fog and light rain. Good run at easy pace, really enjoyed the day out.