We may not have all the money in the world, but one priceless gift we can over to one loved ones is by telling them about Jesus. Having Christ in our lives is not for the purpose of keeping Him all to ourselves.
It is so we make others participate in the gift of eternal life that we have received. We do one family members a lot of good by telling them of our faith and convincing them to join. We shouldn't be in light and feel comfortable that our loved ones are in darkness.
Some of us may be scared or think it is impossible, but we can never know untill we give it a chance. If someone was able to convince us then they are not beyond being convinced. It is better we try and not succeed, that way we'll know that we have played our role, than not trying at all.