It is human nature that he is not satisfied and he always want more. More food than requirement, more shelter then necessary, more to wear, more to drink and more to fulfill his soul. As an example I would like to quote one of my good students.

Today one of my good students stood second in class. Now she is in 7th class and she stood 2nd in the 6th class final examination. She is very bright student and she is not happy at her result and she is not satisfied with her teacher’s checking. She always want to top the class and during her exams< she told me that she is going to top the class with ease but she failed to do so.
I told her that you have stood 2nd in class and it is a good score but she said, ‘’I don’t care sir. I just want to top the class no matter at any cost’’.

It is a clear indication that a human is never satisfy with what he gets he just wants what he doesn’t have. If a person stop running behind what he doesn’t have and just contend to himself to what he has, his life will be a lot happier and easier
image source: https://pixabay.com/en/smiling-teacher-female-college-1280975/