I'll never forget a book that was required for my Acts class at Biola taught by Lloyd Kwast. The book was titled Behind the Ranges. It's the story of J. O. Fraser, a missionary to China from many decades ago.
It's a riveting work. If you haven't read Behind the Ranges, your Christian life isn't complete. I'm so grateful that Dr. Kwast made this required reading in his course. Little did I know when I read it that later I would make 13 trips to that great nation. I'm reminded of the words of Jim Elliott, who was martyred for the gospel in Ecuador:
"What good are Greek, commentaries, insight, gift, and all the rest, if there is no heart for Christ?"
You say, "I can't share my faith." What you can't do, God can do. He'll go with you, just as he went with J. O. Fraser, helping you speak, teaching you what to say, if for no other reason than to keep you trusting him and not yourself day by day.
Have a lovely evening!