The practice of paying attention is the rarest of gifts because it depends upon the harshest of disciplines. So uncommon is it for us to grasp the beauty and mystery of ordinary things that, when we finally do so, it often brings us to the verge of tears. Appalled by our own poverty, we awake in wonder to a splendor of which we had never dreamed.
We often remember to be grateful for big events, like graduating from university or getting married, but it can be more difficult to feel grateful for the small things we do every day. Reminding yourself that eating a meal, for example, is in itself special and can be very powerful. Your immediate awareness of the food in front of you, combining flavors while removing hunger, is a great way to enjoy gratitude as often as you eat! Another is feeling grateful in the morning for being able to comfortably sleep at night. We gain comfort, satisfaction and peace by practicing mindfulness and gratitude in this repeated fashion.
~ Najma Khorrami, from the article "Four Ways to Wire Your Brain for Gratitude" on mindfulness.org