You might be a nobody. God uses people who are nobodies. If you have become a new creature in Christ, and know the Lord Jesus Christ personally, then you are qualified to do the work of evangelism.
I know that there are more than the two stories that I am going to comment on, but these two stories have impacted the world and advanced God's kingdom in an amazing way.
The first one I want to talk about is the man on George Street in Sydney, Australia. I know there are two different videos on Youtube showing this man's story, but only one of them is correct. The man's name was Frank Jenner (you can do a search on the internet and find the page on his story, written by family members). Frank Jenner lived near George Street and he would go out on a continual basis giving out tracts and asking people if they knew for sure if they were to die tonight, would they go to heaven or hell. I have the book also, from those who wrote the story. Frank Jenner faithfully passed out tracts for many years, but didn't see much fruit from what he did. But the results were amazing. Many, even those who were offended by him, came to Christ. These people lived all over the world, and came to Australia as tourists. A pastor in England heard recurring stories of how people came to Christ because of a man on George Street who gave out tracts and asked them the questions. The pastor made a trip to Australia to find this man on George Street and was able to locate him and went to his house to inform him of those who were reached with the Gospel because of his evangelism. Here is the accurate page on Frank Jenner: http://www.wordsoflife.co.uk/the-frank-jenner-story/
The second story is about a man who was a country preacher in PA during the 1950's, who made a decision to spend 12am-2am praying, instead of watching television. During this time, he picked up a Life magazine which had an article about 7 boys who murdered a 15 year old handicapped boy in NYC. He was in tears while reading this and God made a way for him to visit NYC to try to find these 7 boys so he could give them the message of hope through the Gospel.
David Wilkerson did indeed travel to NYC with the hopes of finding these boys, but instead of finding them, he preached on street corners and auditoriums where gangsters lived. Some of the gang leaders and warlords were on their knees repenting. A few of them had radical conversions (and I mean radical) and in turn started ministries of their own. One of the converts was Nicky Cruz, who was a gang leader steeped in darkness and bondage. His intent was to bring harm to David Wilkerson, but God prevented that from happening. All in an evening, he had a complete change of mind and was repenting and calling upon God for mercy by the end of the meeting. He went on to Bible college in CA. to study to be a pastor. Others came to Christ in NYC and now boys and girls who were seemingly destined for destruction, now became instruments of righteousness. Two churches were started in New York City from David Wilkerson's ministry, along with Teen Challenge, which has branches now in many inner cities throughout the U.S. (Read about his story in 'The Cross and the Switchblade').
The stories of these men are just two examples of ordinary people who were filled with God's love and wanted to share it with others. Both men are deceased but their works will continue on, because the works are eternal, with results that we will only see in heaven.
I am a nobody, and I'm ok with that. My name will never go down in History, nor will anyone remember me 4 generations from now. But I can do the work of evangelism and the impact of that will go on for eternity. Those who I reach with the Gospel will, in turn, reach others. Ministries could be started from those conversions. Only God knows the far reaching affects of what will come out of our faithfulness in sharing the Gospel with people.
The Bible says that the Gospel is the power of God unto salvation. God saves people. We don't. It is not our job to rescue people from their sins, but it is our responsibility to reach people with the Gospel message. God will work in the hearts of people when they hear His word.
I don't know if the statistics are the same today, but a couple of years ago, only 2% of the church was involved in evangelism. Not sure of all the reasons for this. It could be from lack of discipleship in the church. It could be from fear of man. It might be from lack of training or experience. The church is to equip the flock to do the work of evangelism. It should be in each of our hearts to want to do evangelism. If evangelism is like pulling teeth, then we need to look at our hearts and see if we really have met the true and living God, for if we have, we should have no problem wanting our neighbors to meet the God who saved and rescued us from hell, destruction, and ourselves.