Gratitude is not a trivial thing, the fact that many people can't do it, it proves that being grateful is not an easy thing to do. Greed is a natural trait for humans, as well as gratitude, but if greed still dominates in us it will be difficult to make something balanced. It goes back to each of us, because only we can change it. It is difficult to do that because there is indeed greed in us, suppressing the greed in us is one way that we can be grateful. I hope I become one of those people who are good at being grateful.
Greed and envy are easy, but gratitude is really hard. It must be said that greed and fear are the two things that occupy the majority of our minds, to control these two things, we need to go through a lot of difficulties and trade time and money to control them. Only when you know how to control greed will gratitude grow in you, no one can help you be more grateful but yourself. Today's social evils are also rooted in greed and envy, if we can let go of these two and use gratitude, I believe the world will be a better place. But that may never happen, human nature is really hard to change.
You can actually say that this is a natural trait that humans have because basically everyone must have this trait but there are those who really show their dominance in greed and some can cover it up but this greed persists regardless of how they behave when they are outside. which is shown to others but in a more distant sense there must be a nature of greed in him.
Now actually how can we manage this for the better, Greed and jealousy will not go away forever and will remain in humans but it can be minimized by controlling ourselves, the problem is whether we can do it or not.