The Earth really isn't flat, even though our perspective tells us it is.
Your perspective is valid, but it's usually not the full story. As a result, you may believe certain things as true when, in fact, they are not. The Earth really isn't flat, even though our perspective tells us it is. The lesson: always test your reality to see if it's really accurate and where you may need a fuller understanding.
The end result, hopefully, is a set of beliefs that empower you to become more and achieve more than you are today. But it all starts by making sure what's real to you is also what's really true.