Yes, there are a few truths, and good ones too, sprinkled through the deception of "The Secret." I think the best is that in the twinkling of an eye, you CAN change your mood. You CAN choose to be happy. You CAN choose to love your mate (as creepy, stupid, repulsive and utterly worthless as they are) (or are not, for that matter). The mind IS a powerful tool, and guess what? Modern brain-swelled science with all its energy and tools and tech, don't know much about the all-powerful noodle. Nope, not much, those smarties, do they know about the brain, and what it is capable of, the untapped powers within.
But as powerful as our noodles ARE, they are still not magic. Granted, 100 years ago, some bloke comes across a modern PC, and he is going to think it is magic. What we think of as a Gameboy, a dark ages dude would consider a tool of the devil, or a wonder of God, and yet despite the contrary opinions, it is just a toy, it is not magic, it is not good, it is not evil, it is just a toy that can be used either way.
There ARE things are mind is capable of, that would appear to be magic, if we could but