The most precious thing you have is being alive. Since you are reading this, it's obvious that you are alive right this moment. And therefore you have the number one thing that can fill you with gratitude.
"But my quality of life isn't all that I would want it to be!" is the thought that prevents many people from experiencing the joy of being alive and the feelings of gratitude for life.
Wanting the quality of your life to be better and taking positive action to make this happen is no contradiction to being grateful for the precious gift of life. This way you have an inner feeling of joy for being alive and this positive energy will give you more inner strength to create the kind of life that would be better for you. The first thing we say when we wake up in the morning is the one line statement that we are grateful for being alive. In Hebrew it is Modeh ani… That's amazing, isn't it? The first words we utter each day say that we are grateful. This sets the tone for the entire day. "Today I will be grateful from the first moment when I wake up."
(From Rabbi Zelig Pliskin's book: THANK YOU! Gratitude: Formulas, Stories, and Insights: Artscroll Publishers)