I think your three questions about how to live without God have all been answered many times. Books have been written about them. But as you know, with or without faith in a God, it's hard to keep on the right path. I've known many good atheists and many good believers. Same for awful people. I look at the big evildoers of modern times. Some have faith and some don't. BTW, where did you get that 7% atheist statistic? It sounds way, way, wrong. Just in China alone, there must be far more than 7% of the world's population who are atheists. And most of Europe is atheist.