God's plan for enlarging His kingdom is so simple - one person telling another about the Savior. Yet we're busy and full of excuses. Just remember someone's eternal destiny is at stake. The joy you'll have when you meet that person in heaven will far exceed any discomfort you felt in sharing the gospel.
From faith hope and love the virtues of religion referring to God there arises a double act which bears on the spiritual communion exercised between God and us the hearing of the word and prayer.