You aren't being paid to believe in the power of your dreams.
Unless your dreams involve making inane small talk with your coworkers, filing reports that will never be read, and sitting through interminable, pointless meanings. Then, I guess, you are being paid for that. Just not well.
If a pretty poster and a cute saying are all it takes to motivate you, you probably have a very easy job. The kind robots will be doing soon.
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.