And on the social level, I think that there can be effects by "changing your consciousness" but they have nothing to do with quantum physics. If you are more cheerful, this can rub off on people. When you smile, they may feel better and act more positively towards you than if you were frowning.
The fact that these effects occur, and that there are sort of similar things going on in quantum physics, does not mean that there is any relationship between the two.
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