There is only one solution: To stop believing.

Removing any and all beliefs means to not feed on "information" from outside in order to act and organize one's life and mind. The starting point should always be what somebody IS. Who are you? The reflex of answering with what you've done in the past, where you were, etc. is founded on belief. If you remove all that, then "Who are you?" becomes easy to answer, not necessarily with words, but certainly with actions.

Somebody who stopped believing, who has destroyed the mechanics of belief within themselves, has no other compass than their personal identity, or "what you are". By using this actual identity as the compass, information can be classed, not as "believed to be true" and "believed to be false", but as "Meets my identity" or... not. As such, the possibility of "error" vanishes: by not acting and thinking out of the duality of true and false, but instead living by "I am, therefore..." no mistake can ever be made. One acts according to one's nature, and that's that.

This has the huge advantage that such individuals cannot be manipulated or bamboozled. In some time, only such individuals will thrive and all others will be rendered more or less paralyzed and ineffective because of these problems you describe.

One of the major advantages of this approach is that it is absolutely effective on an individual level, whereas any other set of measures to "change things" requires a certain degree of popular support, which is made difficult by the very problem you are seeking to fix...