"The Grass is Always Greener On the Other Side of the Fence"

"The Grass is Always Greener On the Other Side of the Fence" means that the things other people have or their situations always look better than your own, even when they are not really so. For the example, do not compare our talents with our friends (The grass is always greener on the other side of the fence). We just do our best. 

This idiom give us a lots of meaning from every side of our life. Every single words in that sentence have their own meaning where everyone need to understand that words clearly. This idiom teach us that we need to increase our self confident to make our life better than other people. In this world, we need to trust to our self in order to make sure we are be a grateful person.