I agree to a certain extent. When I was an atheist, many things confirmed atheism and nothing confirmed God. Now that I'm a Christian, everything confirms God and I find atheism ridiculous.

But the ultimate reality always existed. Atheism was always false and God was always Truth. My perception was the only differentiating factor.

And being positive or negative may change what I generally perceive, but it won't actually change reality around me, only my internal perception of objective reality.

Faith works when it is in God. That's not to say we can't put our faith in Satan and get something out of it. But Satan is still Satan and God is still God. Putting our faith in God will be far better than putting it in Satan. Meanwhile, putting our faith in a rock will do just about nothing.

I don't get to make the rock anything more than a rock, and I don't get to decide who God and Satan are. They all exist independent of me. The same as I don't get to decide who you are or tell you what your opinions are. You are an independent being that I don't control with my mind.

I suppose the response to all of this is just, "if that's what you believe, it will be your world", but my problem is I see no evidence of any of this in a literal sense. Perception is one thing, but my world can only change so much based on my beliefs.