You dont have to be famous to draw people to Christ. But if God has given a talent in you to speak in public, ofcourse you might end up being famous.
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I like personal evangelism where we speak to the person face to face. Its like Jesus's conversation with the Samaritan woman at Jacob's well.
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13Jesus answered, "Everyone who drinks this water will be thirsty again, 14but whoever drinks the water I give him will never thirst. Indeed, the water I give him will become in him a spring of water welling up to eternal life."
15The woman said to him, "Sir, give me this water so that I won't get thirsty and have to keep coming here to draw water."
16He told her, "Go, call your husband and come back."
17"I have no husband," she replied.
Jesus said to her, "You are right when you say you have no husband. 18The fact is, you have had five husbands, and the man you now have is not your husband. What you have just said is quite true."
19"Sir," the woman said, "I can see that you are a prophet. 20Our fathers worshiped on this mountain, but you Jews claim that the place where we must worship is in Jerusalem."
21Jesus declared, "Believe me, woman, a time is coming when you will worship the Father neither on this mountain nor in Jerusalem. 22You Samaritans worship what you do not know; we worship what we do know, for salvation is from the Jews. 23Yet a time is coming and has now come when the true worshipers will worship the Father in spirit and truth, for they are the kind of worshipers the Father seeks. 24God is spirit, and his worshipers must worship in spirit and in truth."
25The woman said, "I know that Messiah" (called Christ) "is coming. When he comes, he will explain everything to us."
26Then Jesus declared, "I who speak to you am he."
(Read John 4:1-26)
Also the famous preachers and disciples dont necessarily have to be rewarded the most. Remember the story of the widow who offered small coins to the temple out of her poverty. Jesus says that she has put in more than all the others.
We dont have to compare our efforts with others because if we do for God as much as we can, our rewards will be far greater than anyone else's.