Gratitude
Thankfulness

Gratitude is an emotion expressing appreciation for  what one has—as opposed to, say, a consumer-oriented emphasis  on what one wants or needs—and is currently receiving a great deal of attention  as a facet of positive psychology. Gratitude is what gets poured into the glass to make it half full. Studies show that gratitude not only can be deliberately cultivated but can increase levels of well-being and happiness among those who  do cultivate it.  In addition, grateful thinking—and especially expression of it to others—is associated with increased levels of energy, optimism, and empathy.