Sometimes the best solution to morale problems is just to fire all of the unhappy people.
You don’t have to accept being underpaid and mistreated to work here … but it helps! Just kidding. You have to accept being underpaid and mistreated to work here. Read your contract.
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.