C. H. Spurgeon preached a sermon in 1873 titled, "The Christian's Great Business." This sermon had Psalm 51:12-13 as a text. Those verses state: "Restore unto me the joy of thy salvation; and uphold me with thy free spirit. Then will I teach transgressors thy ways; and sinners shall be converted unto thee." The first point made in this sermon is that the people who tell others about God are one's who have already been forgiven by God. It is important for those of us who have received salvation from God to tell others about the great salvation that they can also receive.
It is not unusual for Christians to mention that we should tell other people about Jesus. We are great at telling each other that we need to do it. I'm afraid that I'm better at recognizing the need to share the gospel than I am at actually sharing the gospel. But Spurgeon mentioned a motivation for actually sharing the gospel that I rarely hear. Of course we are told that we should tell others because they desperately need to hear the good news. We are told to tell others about God because He said to do it and because it brings Him glory. We are told to tell others because we have received so much and should share out of obedience and gratitude to God. But Spurgeon also mentioned that we should tell other people about forgiveness through Christ because doing so will add to our own joy. We all like to be the one to share good news. The gospel is the greatest news in the world, so it is our privilege and joy to tell other people about it. And when the gospel you share is received by someone, that is going to bring you greater pleasure.
God cares about people. He cares about you enough to save you from the penalty of your sin. He also cares about you enough to offer you joy as you share the gospel. Now all you need to do is receive that joy by talking to people about Jesus or by inviting them to church where they will hear about Him.