Wow! These few verses say a lot about the attitude of gratitude and what causes people to be thankful - or not thankful.
First, it tells us that the day will come when thankfulness will be a rare commodity. What was once a common courtesy will someday become hard to find.
That begs the question, "Why?"
People will be lovers of self. How does that blunt thankfulness? People who are self-centered tend to believe that they deserve what they get, so when they get something good they feel it was owed to them and when they don't they feel cheated. It is hard to satisfy them.
People will be lovers of money. What's wrong with that? Loving money often leads to greed. Greedy people seldom experience feelings of gratitude. Greed and gratitude rarely occupy the same space.
When selfishness and greed rule your life, you are not a very pleasant person - "boastful, proud, disobedient to parents, ungrateful, unholy." May I add - unhappy, unfulfilled and miserable?
Thankful people, by implication, are not self-centered, not greedy, humble, obedient, grateful and holy.
So, are such people thankful because they possess these characteristics or do they have these characteristics because they are thankful? The answer is, "Yes!"
Make life about Him and not about you and He will develop within you an attitude of gratitude.