Start 2013 With An Empty Jar...

Start 2013 off with an empty jar and fill it with notes of good things that happen. On new years eve, empty it and see what awesome stuff happened that year.
This idea can be adapted for weight loss and fitness motivation...each day that you do something positive towards your weight loss and fitness write what you did on a note and put it into the jar. During the course of the year whenever you feel your motivation is low, read some of the notes and you should feel your motivation increasing again.