The Good News is that God loves us and has provided one means through which we could be forgiven for our sins and reconciled to Him. He sent His Son Jesus Christ into the world. Jesus never sinned and therefore deserved no punishment for sin. But He died a cruel death on the cross to take upon Himself the punishment we deserved for our sins. Three days later, He rose from the dead so we could be justified in God's eyes and live forever with Him.
Eternal life is a gift.
We cannot earn it by our own works. We receive eternal life when we put our faith in Jesus Christ and in what He did for us in dying for our sins. As many as received Him, to them He gave the right to become children of God, even to those who believe in His name. In order to receive eternal life, to be forgiven for our sins and enter into a right relationship with our Creator, we need to allow Jesus Christ to be Lord of our life and trust in Him to be our Savior. Before we come to Jesus Christ, we are living for ourselves, doing what we want to do.