"And I pray that you . . . grasp how wide and long and high and deep is the love of Christ and to know this love that surpasses knowledge—that you may be filled to the measure of all the fullness of God." Ephesians 3:17
Saving people is a really hard task - it won't always work. But what you can do is love them, make them feel special and let them know there's someone who cares about them and that their life is worth living.