Why do you think that Christians get in their mind that sharing your faith is difficult and not for everyone to do?
This past winter, Pastor John Mark did a sermon series on being a "fisher of men". In our every day conversations, how can we be a "fisher of men" in a way that is not interpreted by someone else as being pushy or confrontational?
Has the Lord used you in the past in being a fisher of men? Tell your discussion group a story how the Lord used you and what it was like and how you shared and got the conversation started.