Значение идиомы grass is always greener on the other side of the fence

[grass is always greener on the other side of the fence] or [grassis always greener on the other side of the hill] We are often notsatisfied and want to be somewhere else; a place that is far away ordifferent seems better than where we are.

John is always changinghis job because the grass always looks greener to him on the otherside of the fence.