Because nothing says "you're a loser" more than owning a motivational poster about being a winner.
Sometimes the only difference between a budding genius and a blooming idiot is where they choose to take a stand.
When you wish upon a falling star, your dreams can come true. Unless it's really a meteorite hurtling to the Earth which will destroy all life. Then you're pretty much hosed no matter what you wish for. Unless it's death by meteor.
If wishes were horses then dreamers would ride. But they're much more like cattle, so best grab a shovel.
If you require additional affirmation, get a puppy. The rest of us are trying to work.