Well, since I mostly ignore mystical stuff since they can't be proven...
I disagree, it all depends on the subject. Of course, mystical stuff very much seems personal and it is proven in that level. The biggest proof of mystical stuff is the "miracles" that become witnessed such as disappearances of tress, or materializations of stuff out of thin air, etc. I suggest you read the book, "The Holographic Universe", it is very scientific and mystical.