Do not be yoked together with unbelievers. For what do righteousness and wickedness have in common? Or what fellowship can light have with darkness? ~ 2 Corinthians 6:14
Have you stepped out of the darkness to live in the light of Christ? Okay, so what about dealing with those "dark" people around you?
As we walk in the light of Christ, we cannot avoid seeing, and hearing, and being with those who choose to live in darkness. While we are called to be the light in the world, we should take care in how we choose our closest of friends.
Don't misunderstand, we shouldn't close the door on those who choose darkness, but we certainly should never "yoke" ourselves to them if we want to remain steady and strong in our faith. The people you "yoke" your life to -- is your choice.
Be advised, the proper way to save a drowning victim is from a distance with the right equipment. Else you will drown with them if you get too close. Stay in the light and throw a lifeline to those in the dark around you. Ask God to equip you with the right tool for the right person.