Unfortunately the "left-right" divide is at the very crux of figuring out what "justice" and "living a good life" actually mean, so we can't bypass politics and go straight to "making things better" until we agree on what "better" means.

Briefly, left-wing folks think that it's best when everybody is equal, right-libertarians think it's best when everybody is free, and the Catholic Church and other religious types think it's best when everybody does what God says.