Jesus, taught in Matthew 18:21-35. that paying it forward is a requirement for those who have received God's forgiveness. He told the parable of a man who had been forgiven a huge debt by the king, because the debtor had begged for mercy. However, after being freed from the debt, he found a fellow who owed him a very small debt, by comparison.
Although, he had been shown a great mercy, he refused the same consideration to his fellow who had plead for more time to pay. Jesus summarized the story by saying, "So likewise shall my heavenly Father do also unto you, if ye from your hearts forgive not every one his brother their trespasses"
Look in the mirror and the reflection you see before you is the only one that you need to work on, make the changes in yourself first before you can help someone else.