Grass is always greener on the other side

Is it true that the grass is always greener on the other side? We would only know if we look over the other side and compare it to our side, but if we don't peek, we would never know. If we do not compare, we would soon realize that our grass is also green, that what ever we have is also good, we would soon feel contented. When we are contented, we are happier, we are less tired and not have to chase after the greener grass. So why not just lay back and start appreciating what we have and stop whining about what we don't have. So, have you start noticing your own grass which is green or are you still busy comparing it with the grass on the other side, which you think is greener.