Thanksgiving...

Next week is Thanksgiving Day in the U.S.A.

Thanksgiving is a National holiday celebrated by most Americans as a way of showing gratitude and thankfulness for what we have. 

gratitude : express [show] gratitude

                   感謝の意を示す

thankful : 感謝して   (full of thanks = thank-full)

grateful thanks : 心からの感謝

Usually it is celebrated by families gathering for a delicious meal that usually consists of turkey, sweet potatoes, green beans, cranberries, pumpkin pie and other traditional foods.

The origins of the holiday has it's roots in traditional harvest festivals that had been celebrated in Europe for hundreds of years. It was a way for families and communities to give thanks to God for a good harvest. A day to remember to give thanks, especially for plenty of food.

Other common ways we express such a feeling in everyday English:  

count one's blessings

自分がどれくらい恵まれているかを考える

or, 

Count your blessings

文句を言う前にどのくらい恵まれているかを考えろ
(! 愚痴をこぼす人に言う).

I am thankful for my family, my wife and my son, and for good health. 

What are you grateful or thankful for?