If you don't remember it, or haven't read it recently, take the time to read President Monson's talk on gratitude from last conference. If you're not going to do that (be honest), then at the very least watch this little video
"Our minds have a marvelous capacity to notice the unusual; however, the opposite is true as well. The more often we see the things around us--even the beautiful and wonderful things--the more they become invisible to us. That's why we often take things for granted...because we see things so often, we see them less and less."
Now let's all go out and follow President Monson's counsel to "cultivate an attitude of gratitude." ☺