(Character description taken from comicvine.com)

Outside of his initial feelings towards his clan, Neji has been shown to be extremely serious and mature for his age, and to have great self-control. In battle, he is able to stay relatively calm in most situations and carefully look at the situation at hand. As stated by Tsunade, Neji has excellent instincts, both on the battlefield and as a leader. When forced to make difficult decisions on missions, he shows himself able to make a decision through keen observation and analysis.

With this example of overcoming "destiny", as well as finding out the truth about his father's death soon afterwards, Neji abandoned the concept of inescapable fate. No longer bound by the idea that he was stuck at his current status, Neji resolved to become strong enough to never again lose a battle. To do so, he began putting more emphasis on working well with his team, and started to value a mission's successful completion and his team-mates' safety over his own betterment, even encouraging Rock Lee to continue pursuing his own dream. In addition, Neji began trying to remedy the estranged relations between himself and the main house members, most particularly by being kinder to his cousin Hinata Hyuga. His efforts seem to be effective, as he begins training with Hiashi, and, in Part II, even starts to wear traditional Hyūga robes.