Do you find you are well disciplined enough to keep the exercise up every day? Any 'tricks' which help you?
Yes - I know I can do it. Two years ago at this time I set the same resolution (for Jan and Feb only, remember) and I did it. Each day I either walked 30 min or I did an exercise routine in my home I call "triple threat" (3x25 pushups, 3x12 presses with a pair of 20lb dumbells, and 3x12 curls with same dumbells). Given the choice between a walk and triple threat, I'll always do the walk if the weather permits.
Last year, I set the same goal and didn't do quite as well, but still exercised something like 5 days a week on average.
One motivational trick is to keep records. I do this in my food journal and I see that every day, but an even more visible place for me is a kitchen calendar. I have a blue marker and Kara has a red marker, and when I exercise, I mark the day with a blue star. Filling up an entire month with stars was pretty motivating for me.
My ipod is another key to my motivation - I am in an audiobook club and so I always have something I'm eager to listen to on my walks.
One thing that never worked for me was rewarding myself. I am just not very good at bargaining with myself.
This year I've gone a step further - Kara and I signed up with our local community/rec center and are going to take a yoga class on Monday nights. And I bought a 20-visit pass for their weight/exercise room. The place is like 3 minutes from my house, so that should help from now until March.
Once spring and summer roll around, the idea of "forcing" myself to exercise is less important because it's more natural for me to go on walks, hikes and bike rides when the weather isn't sub-freezing.