If you want to be better equipped to "always be ready to give a reason for the hope that is is in you," I recommend you read this book. It has been invaluable in helping me to share Christ with others. And when you are "ready" to share, there is no fear in sharing. Proverbs 16:6 states that "By mercy and truth iniquity is purged." Ray Comfort brings together both in this book.
This is the single most important book i own in my library only next to the bible (Which of course is the most important). Every Christian should read this book, and read it with an open mind. I have multiple copies of this book, and pass them out as i see needed.. thanks Ray Comfort, God has truly blessed you and worked wonders in your life