Basically, self love is promoted, but you shouldn't be a narcissist. I understand.
And about the changing thing, oF cOurSe. When you meet people and form relationship, they will have some influence on you- and even if it's just the slightest bit you will change. Everyone is built up by the influence of people they surround themselves with, their environment in general. And different amounts of time you spend with certain people and certain places, it will all effect how you, as the final product, will end up.