Thankfulness and Stress

I've been really convicted lately about thankfulness.
 I think it started when I heard this quote: "What if you woke up today with only the things you thanked God for yesterday?"

 It is so easy to go just through life, go through the motions every day things, so stuck in the routine that if someone asked you why you were doing something the only answer you would be able to give is "cause that's just what I do."  That happens to me sometimes.  Particularly when I have a lot on my plate.  I do the opposite of what I should do.  What I should do, on those days when I have so many things on my mind that I cannot possibly function, is