Conflict is a major theme in 1984 and we see it most prominently through the character of Winston. Orwell develops Winston's conflict through his dreams. In Part 1, Chapter 3, for example, Winston dreams about the deaths of his mother and his sister. He struggles to remember the details of how they died but this dream coincides with the beginnings of his rebellion against the party. When he dreams of his mother again, in Part 2, Chapter 7, we find a much more detailed version of events. He is able to remember his last meeting with his mother and realises that he "must have deliberately pushed out of his consciousness over many years." In other words, Winston's dreams develop and become more detailed as his feelings of rebellion intensify. The dream therefore represents the conflict between outward conformity and inner rebellion.
Similarly, we see evidence of conflict in the character of Julia. On the outside, she represents complete conformity to the party: she is a member of the Junior Anti-Sex League, hands out party flyers and goes on community hikes. But, like Winston, she is driven by an internal need to rebel against the party. Julia's sexual behaviour provides the evidence of her conflict. In Part 2, Chapter 2, she tells Winston that she has had sex with a number of party members, "hundreds of times." Her body therefore betrays her true feelings about the party and, ultimately, leads to arrest and torture at the hands of the Thought Police.