You might call the shamanic aspect of it "non-scientific woo" but it's important to distinguish between "based on objective reality" and "actually improves your life" here. Many beliefs are one but not the other; in fact, I don't think they're that strongly correlated.

Of course, you can't easily alter your own beliefs, so if you have a lot of trouble suspending your disbelief for these things it might still be a turn off for you. But some such things can be useful to "believe" even if you do not think they reflect objective reality.