" the grass is always greener on the other side (of the fence) "

 [ "The grass is always greener on the other side of the fence" ]

1: Refers to the way we tend to look at other people’s lives and other things that we don't have in general through rose colored glasses.

  * e.g.,  ... Friend#1: You’re so lucky, you went to a great college, have money and you’re so smart and will probably accomplish more by the time you’re 30 then I will in my entire life. 

 [ "The grass is always greener on the other side of the fence" ]

2: Comes from the idea of looking at a neighbours lawn and seeing it as better looking, healthier and overall greener then your own when in reality you’re just ignoring anything negative about it and downplaying everything positive about your own.

  * e.g.,  ... Friend#2: Are you serious? I’ve always envied you. People expect so much out of me. I’ve never been able to have a life because of studying and other schoolwork. If I get less then an A, people freak out like I got an F. I may accomplish that much, but with all the pressure on me I’ll probably be insane by the time I’m 3 In so many ways, I wish I could just be a regular guy with normal expectations and a normal life.