[Boudica]

I think the concept of religion is usually reliant on a belief of something greater than you, or a greater power driving your reality. It sounds like what you're really looking for is a change in human behaviour, from less destructive and negative, to a more positive and constructive ideal. Beyond cults, I don't believe it is possible to start a religion, but a movement is something you can start. Religions are based on believing in something, not making up a set of ideals and deities. However, a movement can be founded upon ideals. You can outline what your movement stands for, and ideals of living that you hope others in the movement will follow.