I believe that throughout the whole novel, Equality 7-2521 is changing his mentality of things. He begins to see how learning and discovering new things can be so life-changing. In the beginning he knows he is different and he's told one should not be different than his brothers, yet, you can get the feel when you continue reading that he believes being different isn't really a bad thing. I believe Equality is going through an internal conflict throughout the whole story. He knows he is different, yet doesn't understand why it is such a bad thing.
When Equality discovers the light bulb, he decides to take it to the Council of Scholars with hopes that they will understand him and forgive him, because his discovery is the greatest thing they've ever seen. Instead, after they are showed what kind of gift Equality gave them, they decided to try and destroy the light, because they felt that a creation made by a man alone, is not a good creation. They condemned Equality for feeling like his mind was greater than the mind of his brothers. Equality feels that his creation will do well in the world, so he jumps up and takes it before the Council can destroy it and heads into the Uncharted Forrest. While on his journey, Equality is learning about individuality. He sees himself for the first time and learns that it is ok to wonder about things. He starts to have less appreciation for the society he was once a part of, which wasn't much to start with.
I can't think of any more exact events that caused a conflict which in turn changed him, because I feel once the story even started he had already started the process of changing. He knew something wasn't right where he was. He just didn't know he could do anything about it until later. I feel that him going through these conflicts lead him to becoming a strong, out-spoken individual who can truly show the way to a greater, individualistic world.