Inside each of us is someone who is timid. Whether you're a little timid, or a lot, we have aprehensions; fears. Fears of spiders, fears of abandonment, fears of death, and of the unknown.
Don't be afraid. Encourage yourself by filling up on God's word, so that you can be ready at a moment's notice to share your hope with those who don't know how to hope.
I Peter 3:14b-16, "Do not fear what they fear; do not be frightened. But in your hearts set apart Christ as Lord. Always be prepared to give an answer to everyone who asks you to give the reason for the hope that you have. But do this with gentleness and respect, keeping a clear conscience, so that those who speak maliciously against your good behavior in Christ may be ashamed of their slander." (NIV)