Having your heart smashed on or around Xmas is a great way to avoid social venues where massive quantities of food are not only offered, but literally shoved down your gullet before your feet leave the welcome mat.
I won't go on about internal shifts, but I have come to realize that's it's best to get out of your own way -- which I'll do right now. Take note of some of the great discoveries that came my way in 2010.
Anyone can make short-term changes in their eating behavior and lose at least a little weight. But unless they make changes in their thinking, they will never be able to sustain their new eating behaviors.