1) Lack of response: Peter, lots of people have shared the Gospel with minimum results. How many responded to Noah, WHO WAS called a "herald of righteousness" (2 Peter 2:5), as he prepared the Ark? Or Isaiah, who was called (chp 6) to preach but warned that no one would listen. It would be interesting to note the number of pioneer missionaries who spent years sharing the Gospel without any kind of response. Sometimes, a lot of sowing is needed, and then another will reap (note John 4:37,38).

2) Review your methods: Sometimes we need to get help with our methods. It might be beneficial for you to ask a more experienced student evangelist to accompany you and evaluate your presentation. It's often humbling, but it's a great way to learn.

3) Differing gifts: You may not have the gift of evangelist, but this should not deter you from either sharing the Gospel or considering being a missionary. I don't think I have the gift of an evangelist, Peter, but I helped scores of Colombian students learn to share the Gospel. Not many accepted Christ with me, but others, using the method I had taught them, saw a lot of fruit! My gifts lay in other areas: vision, teaching, training, encouraging, and building. All of these gifts - and many more - are needed wherever we want to see God's Church planted and nurtured into growth.

So, keep on sharing the Gospel, ask others to evaluate your methods, and open yourself to many ways of serving. The Lord will guide you more and more into His purposes for your life and, I trust, one day to a cross-cultural ministry.

Blessings on you!