That quote is saying that you should always know the difference between what you're getting and what you deserve. Sometimes we settle for less than we deserve, and we shouldn't do that. We should always strive for what we deserve and not settle for anything less.
It's important to know our self-worth and what we deserve, and not let anyone or anything make us feel like we're worth less than that. We should always be true to ourselves and our values, and not compromise them for anything.
In life, we often get what we settle for, and if we settle for less than we deserve, we'll never be truly happy or fulfilled. We should always aim high and work hard for what we want, and not settle for anything less than what we deserve.