Also, I have a hard time buying into this team not believing yesterday. They fought hard and made plays late. Yeremiah Bell's INT comes to mind defensively. Welker, Brown, Frerotte and Booker in the 4th.
This team went up late in the 4th only to watch the defense give it up. Previously, this team would fold. But they marched right down the field and got to the 6 yard line. And they had chances to tie it. Not suprisingly, this has been the case in most of our losses (driving late with a chance to tie/win).
Also, leaving 10-17 points on the field in the 1st half with a lead has nothing to do with not believing and everything to do with not executing. It's the 4th quarter when teams tend to get scared or quit.