Read Luke 24:27-32. First notice, that Jesus did not invite Himself to abide with them. He waited for an invitation. Pushing your thoughts on others often causes resistance. Wait.
Be alert for an invitation to speak. Next, notice that even before the travelers realized who had opened the Scriptures to them, their hearts burned from the words. Be ready to share the gospel when you do get an invitation.
For a summary of the book of Luke, see Bible Books: New Testament under Book Summaries.