Gratitude

I get to give a talk in Sacrament meeting on Sunday and I have been putting off doing anything about it all week. The mental block I have with the writing seems to be extending to talks for church as well. The topic is gratitude. It seems like such an easy topic, yet I am struggling to figure out how to present it. Most of the time, I write my talk in my head and put it on paper Saturday night or Sunday morning, so I'm not worried yet. But if any of you have any suggestions, I'd love to hear them. It's a good thing I only have to give a talk every two years or so. Doing this on a more frequent basis could give me ulcers.