I'm guilty of being a part of this myself: I post smiling selfies and news about accomplishments, I don't usually take to Facebook to complain.
But truth be told, if you scratch below the surface you'll find there's a lot more going on than what you see through the lo-fi photo filter of digital life.
I post smiles because they make me happy during the difficult times. I choose to dwell on the good things in life as a cure-all. Glass half full and all that.
But on the other hand, there's absolutely nothing wrong with feeling sad. It's completely natural and everyone does sometimes... sometimes a lot... sometimes a lot more than they let off.
My point is, if you're feeling blue don't let the happiness of others get you down even more. We all have a lot more going on in our lives than you will ever see on a silly social network. Pull back the curtain and you'll find we're all on this same insane roller coaster called life.