Summary: Thanksgiving should not a periodic occasion but rather a permanent occupation
Thanksgiving as an assignment to comply
Thanksgiving as an attitude to characterize
Thanksgiving as an ADORNMENT TO CLOTHE
Christians should be characterized by thanksgiving. According to Romans 1 (quickview)  unthankfulness is a trait of the ungodly. In II Timothy when Paul is describing the last days, we observe that unthankful is mentioned just before unholy.
As the ungodly and an unholy are distinguished by being unthankful, Christian should be distinguished by being thankful.
See John 6:11 (quickview) ,23. The only One who could say the world is mine and fulness thereof giving thanks. He is giving thanks for that which is hardly enough for a lad’s lunch. I wonder if thanksgiving did not have something to do with the miracle.
Thanksgiving should be a garment that should clothe Christians everyday. Thanksgiving should adorn every Christian. Thanksgiving is not a beauty that fades when sickness smites the body or which is lost in the withering touch of years, but it is the beauty which grows lovelier in pain and suffering. A thankful heart shows our likeness to Christ.
I have never met a defeated thankful Christian. A thankful person is a happy and victorious person.
Thanksgiving should not a periodic occasion but rather a permanent occupation!