Perhaps there is some truth to the saying “the grass is greener on the other side.”
We can always find greener grass than the grass we’re standing on.
But instead of getting caught up in comparison-mode, re-route your perspective back to yourself.
Pining for another person’s green “grass” (someone else’s life, career, marriage, etc) will work the opposite way you want it to.  Instead of focusing on the condition of your own grass, you’re wasting time wishing you had someone else’s.
Maybe the grass IS greener on the other side.
But, so what?
Instead of being jealous or threatened by greener grass, see it as an invitation to water the grass you’re standing on.  If someone has an amazing job, be inspired to lean in and set a goal to earn a promotion.  If someone has the “perfect marriage,” figure out ways to work on your own marriage (the #staymarried blog is a great resource).
The secret to a better life isn’t seeing how you size up to someone else’s life (and thank you Facebook for making this all-too-easy).  The secret to a better life is self-awareness…and knowing what fertilizer you need in order to be fruitful and productive.