Salt changes the flavor of things. As a believer, so should you.
If you conform yourself to this world, you have become just like the world, therefore, you are good for nothing.
Be the change you want to see.
Matthew 5:13 (KJV) – ye are the salt of the earth: but if the salt have lost his savour, wherewith shall it be salted? it is thenceforth good for nothing, but to be cast out, and to be trodden under foot of men.