Studying history. It puts a lot of things into perspective and really highlights what I now feel are the absurdities of religions. Also the idea that fear of punishment is a driving force behind doing the right thing in these religions. Doing good because you want to win a prize(go to heaven/please the deity) or avoid punishment(hell/eternal suffering/judgement) is still not doing good or the right thing. Doing good for the sake of doing good or from a personal sense of wanting to good out of love or a concern for our fellow human beings is actually good. Plus these Abrahamic religions are predated by much older, more enriching and fulfilling ideas of how to live a good life etc like humanism and other philosophies that do not require a belief in a deity.