Evangelism: Testifying or Terrifying?

Our Evangelism team at NECL is starting small. We all agreed on paper to a vision and mission encapsulated by the "Love. Serve. Tell." tagline, and many of us are Serving like crazy. We're open to dialogue about Love too, and I think we all have some level of comfort discussing the place of Love in our lives and in our faith. But the "Tell" is a tough task, difficult for me at any rate. Ask me about Love and I'll talk until you tell me to shut up. Ask me how God is at work in my life, and I'm apt to crawl under the table.

Mind, that's if we're in the same room. I can write it easily enough, in a blog or an email; because I don't have to experience the immediacy of your reaction that way. It's not that I don't want to tell; it's that I'm fearful of the response, or a lack of response, to something so deeply personal. It doesn't yet feel to me like a gift I have to give, this Telling. I have all the predictive traits for evangelism avoidance: German, Lutheran, private, easily shamed. I'm curious to hear from someone who came to it reluctantly and now finds joy in it -- I'd like to know how that journey was made.