How can I help my family?

PRAY FOR THEM.Here's the problem - your family members aren't going to respect your opinions very much because you're their "little daughter" or "little sister".Even Jesus had this problem.When he returned to His home,He did not perform many miracles because of the lack of faith that He found among the people who knew Him.The people viewed Him just as "Joseph the carpenter's son".But it got even worse,His mother Mary who some people idolize as some sort of a goddess,did NOT assist Him in His ministry.In fact she actually tried to talk Him into quitting and returning home to the carpentry shop.So you're in real good company when your family ignores you.You'll just get discouraged if you keep trying to change them.It's best that you pray that God sends them a witness who will be able to convict them of their wrong behavior.In the meantime,keep yourself spiritually strong.STAY CLOSE TO JESUS.

Pray for them and set a Godly example, its what Jesus did for us.

thats it, like the two before me have said.
pray for them. your words dont always do anything.

1 pet 3.1
...if any obey not the word, they also may without the word be won, BY THE CONVERSATION of the wives.

there are some people who the word of God wont effect, there are people who you can talk to em all day, and it wont do anything for them.
but they can still be saved, WITHOUT THE WORD.
your conversation (or that word actually means way of life) can save them.

its not always what you say, its what you do.

go and pray for them, becuase there are things going on behind the scenes that you cant see, and prayer is the only thing that will change it.
ask the Lord to save your family, it isnt about how well you ask or what you say, he knows your heart and what you want from him, and if you believe and are patient to wait and keep praying no matter how long it takes, youll see miracles happen.
pray for them, and live the life as an example.

there are times when you need to be silent and not say anything, becuase your wasting the word when your talking and it aint doing anygood.
becuase it doesnt always change people.
pray for them. God can do what you cant do. but you do what you can, and hell do what you cant.

I agree pray for them. Don't try to cram God down their throat, don't tell them how they are living is wrong you'll only get the reaction your getting Best thing to do is live by example. They will notice the change in you and will want to know how you have such peace. My husband is seeing this at his work. They know he's a Christian but he doesn't talk about it he just lives it. Now some of them are starting to ask questions.