Actually, I do not think that a strong secular education makes it more difficult to achieve your two goals than a strict religious education. Just pointing at the fact that one of the extremes you want to avoid is framed with religious vocabulary (holier) kind of shows that religion is no antidote to the extremes (as one saw quite a lot in history).

One of the main things I practiced in the last years is to increase my "ontological flexibility", both by rational consideration of the limitations of my mental models, and by actual meditative practice of developing different "ways of looking", including theistic and animist ones. What this kind of practice does is (i) to reduce unhelpful attachment to fixed views (because I now experience a few of them, incompatible with each other but internally consistent, in a regular basis), and (ii) to open to a range of beauty that I did not suspected, and which is hard to put into words (and even harder to not make sound super cheesy). I am mostly following this kind of teachings, though I read texts from religious thinkers of every religion and time in history: https://hermesamara.org/teachings

What I wonder, though, is how much influence this had on my behavior. Even if my experie ce changed quite a lot, it could be little, as related in this article: https://slatestarcodex.com/2019/10/21/the-pnse-paper/