The grass is always greener on the other side …
… that is what they told him, that is what he looked for …, until one day he awoke in a desert as there hadn’t been any other side left.
photo credential: https://en.wiktionary.org/wiki/the_grass_is_always_greener_on_the_other_side#/media/File:Cattle_eating_grass_through_barbed_wire_fence.jpg; Di James Rickwood – Flickr: P*ssed again!, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=14780500