There are only so many ways you can help others. You can help them financially or give them materials things to fulfill their needs; you can give them good advice or inspire them by your example as a believer in God; and lastly, you can pray for them. The outcome is still up to the person you try to help. As the saying goes, you can lead a horse to water, but you can't make it drink. So, beware of your limitations and leave it all to God.