If you were to place a slew of fleas in a jar and sealed it, the fleas will hit the top trying to escape.
After a while though, the fleas will train themselves to jump just below the ceiling. At that point, you can remove the lid and the fleas won’t escape.
Human beings live the exact same way.
After a while of hitting our ceiling, we get discouraged, we quit jumping so high. We just accept our environment and call it “the way things are.”
It’s difficult to see when your environment changes. Sure, it’s discouraging while you wait for things to move, but what’s the alternative?
The way things are, are not the way things will always be.