What does the quote "life is a constant duel between perception and reality" by Sonny L mean?

Life is a constant duel between perception and reality, is a quote by Sonny L. This quote has a very powerful meaning. Perception is one's way of understanding and perceiving things. Reality on the other hand is a fact, a truth, it is what it is. Every individual has their own perception towards reality.

Some view failing at sports or academics as a lesson to improve, while some view it as a lesson never to try again. In this case the reality is same, which is failing, but how two person view failure in their own perception.

So basically this quote means that life is a continues fight between what we perceive and what the reality is. It's just a matter of right and positive perception.