What you're describing is quite common -- you're neither lazy nor a loser. I'd guess a couple of things are happening.

First, you no longer have a concrete goal the way you did with c25k. One hour runner also has a goal, but it's a little less tangible -- distance is more concrete than time. I had the same experience after my first (and so far only) half marathon and I'm experiencing it a little bit after my first (and so far only) marathon. Without having the scheduled structure of a program, I'm a little bit lost. For me, the only solution seems to be to find a goal race and get into a training schedule.

Second, I think the time change and darkness coupled with the relative cold knocks out a lot of motivation. Given the choice between staying in bed and getting out to run is largely a matter of discipline. For me, that discipline comes only from having the fear of doing horribly in a future race, so I invariably choose to get out the door. Again, without a goal race, the bed tends to win these days.

I'm also finding that I'm inclined to eat anything that I can outrun. Gotta work on that -- I'm already starting to pick up some weight....

Hang in there, and hook up with a group of people that will help keep you accountable! You're certainly welcome to join us on the Long Haul thread.

Don

I had a similar problem. I decided to start on a 10k goal. The program (www.halhigdon.com) has you doing some cardio and weights which will break up your routine and make you stronger and a better runner. I have found that it really helps. I am motivated again and now have run over 4 miles.