Similarly to capsium I find it really difficult to seperate the two things out - ie the 'telling others' from simply being who I am. My faith is such a deep part of me that I cannot fail to 'share' it.
However, this does not (ever) mean that I deliberately and calculatedly shove it at others, in insidious or obvious ways. If people invite me to talk about it, fine, I will. If people make it clear they do not want to talk about it, fine again. I hope that I show respect to every person, whatever their faith or lack of. I have a good friend who wants nothing at all to do with faith, and has made it very clear she never wants it brought into the conversation, and I respect her by not doing so. We have plenty more to natter about, and I love her as my friend, not as some potential convert.
There is something in me that wants to share it with everyone, much like you would want to share any good news with folks, especially news which (in my experience) is so transformative in the here and now. I sincerely believe it can make an incredible difference in people's lives, quite apart from later on. I would surely be selfish if I sat on such a thing?
So there is sharing faith by how we act, and sharing faith by answering questions and engaging in debate, by being polite to others in the way we respond to such questions, and sharing faith by being who we are. I don't believe that bellowing at someone on their doorstep is actually so much sharing faith as simply bellowing at someone on their doorstep. But I kind of understand those who do go and knock on doors - they feel a certain compassion for others and a longing to share the good things they know. I think it is a misguided way of going about things, as it simply puts people's backs up.
Someone (hih?) made a point about people of faith not being the 'better' friend due to their agenda of conversion. I understand this - surely the better friend is the one without the agenda. I suppose though it's what you think the agenda is and means. For me, I don't like to call it an agenda, but simply a desire for good things for my friend. The more I love my friend, the more I want good things for her, yes? For me, sharing faith is sharing good things. But I only share them explicitly if invited, and I certainly don't think about each friendship in an agenda driven way - I think of my friends in a fond friendship driven way, like most people would. I hope that clarifies things a bit, but I'm not feeling too clear today still hungover from saturday