Pony General:"Season 12 will never air" edition.

Found this picture while making my sig. It really shows what the two have in common.

They've all had some kind of mental breakdown during the series:

Applejack - Applebuck season, overworked
Twilight Sparkle - Swarm of the Century, "let's build an exact copy of Ponyville right over there"
Rainbow Dash - Sonic Rainboom, stage pressure
Rarity - Suited for Success, "Look at me, I'm SOOOOOOO PATHEEEETIC"
Pinkie Pie - Party of One, "my friends don't like my parties and don't wanna be my friends anymore..."
Fluttershy - The Best Night Ever, "YOU'RE GOING TO LOVE ME!"

Anyway, more pics like yours: