1. thankful - Adjective
2. Thankful - Proper noun
Obtaining or deserving thanks; thankworthy.
Impressed with a sense of kindness received, and ready to acknowledge it; grateful.
Source: Webster's dictionaryBe thankful for what you have; you'll end up having more. If you concentrate on what you don't have, you will never, ever have enough. Oprah Winfrey
The worst moment for the atheist is when he is really thankful and has nobody to thank. Dante Gabriel Rossetti
God has two dwellings; one in heaven, and the other in a meek and thankful heart. Izaak Walton
What is it to be a gentleman? Firstly it is to be thankful and secondly to complain. Serbian Proverb
If you're not thankful then you're a wizard. African Proverb
A thankless man never does a thankful deed. Danish Proverb