Thanksgiving is about giving thanks. And the one who we are supposed to direct most of our thanks to is God. This was made abundantly clear when George Washington signed the first national Thanksgiving Day proclamation for the United States of America.
Take some time this Thanksgiving to thank God for all the blessings that you have in your life. You will find - if you do it right - that you have much more to thank God for than you have to complain about.