How Can a Christian Overcome the Fear of Witnessing?

https://www.godtube.com/resource/mediaplayer/w6zd6gnx.mp4;https://content.swncdn.com/godtube/2014/09/29/479176/479176_480p_posters12.jpg;https://www.godtube.com/watch/?v=W6ZD6GNX;