Interesting question, and the answer is either easy, difficult, or irrelevant depending on who you ask.
Many Christians seem to be of the mindset that there is no "good" Christian. You either are one, or you are not. Your comportment, works, and mindset make no difference, since "once saved, always saved".
Others would say that we should try to emulate Christ and adopt his teachings into our daily lives, which is difficult.
I think you have to both talk the talk and walk the walk. It requires a good deal of introspection and humility to recognize what faults you may have, and then it is literally a daily struggle to try to overcome them. But like any effort, the longer you do it, the better you get at it and the easier it becomes. The goal is distant. The Savior closed the Sermon on the Mount by saying, "Be you therefore perfect, even as your Father which is in heaven is perfect."
Best of luck. We're all in the same boat.