You are never alone, your Father is with you. His power fills you to be a witness for Jesus and to tell others about His love. With the Holy Spirit living inside of you, and this Christian shirt on your back you don't need to be afraid to speak His words. Isaiah 41:10 promises us that God with us and that we should not fear or be dismayed. Put your trust in God and see how He uses you to change the hearts and minds of others.