Have you checked out ThxThxThx? It's creator is Leah Dieterich, whose Mother taught her to write Thank You notes, so she writes one everyday and they are quite amusing. Plus I love that she finds something to be thankful for in such mundane or everyday things. It really makes you feel grateful for what you have, and it's entertaining! Double whammy.
I used to keep a journal where I would just write one line everyday of something that was good, like "I had awesome hair today", "I found a penny face-up so I'm bound to have good luck". After reading her page I think I might pick it up again.
Today, I'm thankful that it's Friday and I'm running errands for my Craft Day tomorrow for the Wedding and finally getting some ish done! I'm also thankful for all of your support and suggestions about shoes yesterday! You girlies are so so amazing and each comment and email meant so much to me! I'm in the process of still shopping and I'll be writing you back this weekend! What are you thankful for today?