Jesus has a lot of fans. But Jesus didn't come to be a superstar. He came to be our Savior. He came to bring the Kingdom of God - God's rule and reign. A lot of people in the gospels wanted to get in on it because they thought the Kingdom of God meant the Romans would be booted out of their homeland. One of the religious leaders of the day came to Jesus at night (because he was embarrassed to be seen with Jesus in public) and asked about it. Jesus told him, "You must be born again." You can, and should, read the story in John 3:1-21.
Everyone's conversion story is different. Below are the two essential elements the Bible says are necessary to be "born again."