Someone who lectures me on the wrongness of my beliefs will not be a friend of mine for long.

I completely agree. However, I am often faced with a personal complication to this very thing.
Sometimes, I feel like I have to persuade someone that her beliefs are wrong. Take the Iraq war, for example. I believe it is wrong for many reasons, and I feel it necessary to explain to people who disagree with me why I think they're wrong.
I worry, then, that I am suffering under the same misconceptions that many pro-life (or pro-capital punishment, etc.) people do: trying to "fix" someone else's beliefs.
i.e. I worry that I end up lecturing others on the wrongness of their beliefs, despite the fact that I get upset when they do it to me.
That make sense?
I guess I worry sometimes that I'm a hypocrite.