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.
My Elayna at age 7, drew me a picture and wrote "All that you need to be successful is love." If you read the Bible verse 1Corinthians 13:4-7 you will get Gods image of love, and yes success follows! The wisdom of a child..... Love her!