My personal philosophy is based on my Wiccan path. It means a lot of things, but fundamentally it means that I alone am responsible for my actions. I cannot screw up and blame others for my screwups. I cannot hurt another without owning up to it and trying to make amends.
I can't blame society for my point of view about other races/religions/groups, I can't claim to be a victim of something just because I happen to be screwed up in the head in some way, and I can't ask Jesus to take away my sins because, frankly, that's not his job. It's mine.
There's more to it, but that's probably more than enough to start something, or to at least do my part to help keep something going.