I wouldn't say that I'm very similar to the character of Nathan at all. Both of us have had very different upbringings and backgrounds. I have a competitive nature like the character of Nathan. That's really easy to draw from when I'm acting; that's probably the biggest similarity.
As far as having peace within myself, the one way I can do that is forgiving the people who have done wrong to me. It causes more stress to build up anger. Peace is more productive.