A Vietnamese proverb goes like this: "When eating fruit, remember who planted the tree. When drinking water, remember who dug the well."
That tells me that a life of gratitude is one of being awake and aware. I don't want to sleepwalk through my life, taking for granted all the good things that come my way. Someone is responsible for even the most ordinary things that we use and enjoy daily. Someone planted the tree or dug the well. Someone set in motion the machinery that brought this or that into your life.
It might be interesting to be more intentional and watchful for at least one day: Give thought throughout the day to as many things as possible. What or who made it possible for you to enjoy this? Just for an example, at one of your mealtimes, think of all the people it took for that food to be on your plate: the grower, the harvester, the trucker, the grocer, the cook and so many more. Take time to be grateful.