The highest appreciation we can give someone is not through words because they can just be words and not mean anything if the tone is not right.
The way we speak and behave are completely different and we get judged differently.
Live by your words and let your acts be seen in the way you make your day to day count. There is so much to be thankful for but, we mostly allow words which spell insincerity express how we feel.
You can pretend to be happy o the outside when you are spiteful inside. Your frame of mind plays a major role in how you relate to the world from the outside.
When you say "Thank you" allow your face say it louder than your voice and then it will mean something to the person receiving it and to you giving it.
Gif source.