Can NLP system work for changing all positive thoughts to negative? Is it a matter of choice?

How do you think? Of course one wants happiness and the aim is to change negative with positive schemes, however let's say one doesn't care and for the sake of the experiment wants to change all positive with negative, is this possible using NLP? Would it work?Can NLP system work for changing all positive thoughts to negative? Is it a matter of choice?Yes it is possible and it may work.

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