I have learned for myself that God is real, our choices matter, justice and mercy are real things, and we can find good things that last forever, if we want. There is so much good there, that it makes everything else seem to me shallow by comparison: not just peace, but also progress, stability, all kinds of top-notch life helps, enjoyments, refinements, etc.

For many things, one can see the scope of it, top to bottom, after studying for a while. This is endless, expanding goodness that earns trust, answers questions, and yields joy that lasts.

Edit: minor wording improvements. And thoughtful comments appreciated w/ any votes; thanks.