"What if you gave someone a gift, and they neglected to thank you for it--would you be likely to give them another? Life is the same way. In order to attract more of the blessings that life has to offer, you must truly appreciate what you already have."
It's impossible to feel grateful and in the same moment depressed, angry or afraid. If you concentrate on finding whatever is good in every situation, your heart will soon be filled with love and understanding, a feeling that nurtures the soul. As Meister Eckhardt says, "If the only prayer you ever say in your entire life is thank you, it will be enough."