75 'Thank You for Being a Friend' Messages That Are Heartfelt and Sincere originally appeared on Parade.

Thank you for not being a coward, and earnestly and truly being there for me when I was going through one of the darkest parts of my life when I forgot to love myself, but ironically you did not.

One card simply stated: “Thank You for Being My Person.” Advertisement According to the Greeting Card Assn., Americans purchase around 6.5 billion cards each year.

But if you really want to let her know you appreciate her thoughtfulness, there is no harm in taking three minutes to write and mail her a thank you. "Being part of a society means knowing how to ...