The aim of the New Age Movement, the Secret, and other such 'positive thinking = reality' groups is very nefarious. I'm sure some of them are simple motivation building programs and are harmless but the shift towards 'manifesting reality' is for many reasons.

1. Make the people more materialistic and make them squander any spiritual gifts they may have on material desires. Make them serve material desires, fantasize and dream to that end, thus increasing their material attachment. This will lead to them committing fruitive actions and thus binding themselves, through karma, to this cycle of births and deaths (reincarnation). This way they will always be trapped in this material universe, with no chance of escaping to the spiritual universe.

2. Pacify them. If one believes that only dreaming feverishly of a material desire will make it manifest in their lives, they will stop improving themselves. They will think that simply 'believing' in perfection will make them perfect. That simply 'believing' their reality is good will make it so. They will stop making efforts to improve their lot in life. Ultimately, when the Secret does not work for them, they will become jaded and frustrated, either thinking that they are not capable of believing in something totally (thus becoming demotivated and depressed), or thinking that it is a lie (it is), and discounting all other mysteries as hoaxes as well (many are true).

3. Cheapening gratitude. We are supposed to have gratitude to Lord Sri Krishna, for giving us this human form of life, whose only purpose is to achieve god-realization and liberation from the material world. We are supposed to have gratitude that he has given us a chance to serve him by granting us existence as a spirit soul, his part and parcel. We are supposed to have gratitude that He exists, as a worthy object and repository of our natural feelings of affection and love. Gratitude is a very pure and unselfish emotion, unconditional and a means to deepen our relationship with God. It can be very powerful. Instead the NWO seek to pollute it with material desires, make it conditional, expecting the result of improving our life through it.

4. Make people more lusty. According to Srila Prabhupada, the basis for this material existence is sexual desire. Most people are desiring for sex, one way or another. They either want to be rich and settled so they can host the women of their dreams, or directly desire sex. This causes them to fantasize about sex constantly. Since the Secret doesn't work (more on this later), they become sexually frustrated and we all know what that leads to. Porn, depression, feelings of unworthiness, crimes, misogyny.

5. Make people desire to be God. Maya has two traps to keep the conditioned souls bound to the material universe. The first is the sexual desire. The second is the final trick maya plays on a nearly liberated soul - tell him/her that They are God. The Secret does the same thing. People start thinking they are vibration and they can achieve infinitely higher vibrational states through 'positive thinking' (read : desiring material desires very strongly). No doubt, there are lower and higher states of consciousness. Vibration does matter, and plays a huge part in shaping consciousness, but not in the way these people would have you believe. In any case, they start thinking that they are the God of their reality, and all they have to do is to keep themselves in a positive state, and that believing in good/bad, right/wrong, karma etc. is all negative thinking. This couldn't be further from the truth. The truth is that Lord Sri Krishna is the Supreme Personality of Godhead, an independent, primeval, eternal being who has created all of reality, and is the Supreme Personal Absolute Truth.

6. Make people thought police themselves. If one thinks that whatever one believes will manifest into one's reality, they will shy away from dwelling on important conspiracies and negative actions of others. Actually, doing so only makes us more knowledgeable and motivates us to develop counters and be aware of those wrongdoings, instead of somehow helping the actions by giving 'belief-power' (invented term) to them. So people are scared and pulled into two directions - to ponder over aliens or to not, to think of jews or to not, are we bringing them into our world more strongly? Am I feeding a thoughtform of Jesus Christ by thinking of him? (no he's a genuine spiritual personality, he doesn't depend on your belief to exist). So many conundrums and contradictions result from this type of painful thinking. It is very stressful.

The New Age in a nutshell - https://imgur.com/W8eRHny (although the pic rags on idol worship, which is a legitimate form of worship)

Lust, the greatest enemy - https://www.asitis.com/3/37.html

Please ask me any questions on krishna consciousness. You can get started on learning more about it by reading asitis.com completely.

Why the Secret doesn't work - Just desiring something strongly (and following the other steps, visualization, belief, gratitude, acceptance etc.) won't make it manifest in your life. Some people do get the result but that is because they deserved it. It was written according to their karma that the next 5 material desires they hold within a certain acceptable range (not 'I want to be king of the world' but small manageable stuff, of course it can be big stuff too but it needs to be supported by the karma of the individual) will be fulfilled and so the universe does provide (the demigods provide) the fulfillment of the desire. They are the success stories we read about. But ask how many of them constantly manifest whatever they wish. I'm sure their luck (karma) runs out, unless they keep doing pious deeds to deserve the enjoyment of those results.

Of course, God exists and thus impossible is a word in a fool's dictionary. There are mystic abilities which allow one to manifest one's desire but that comes from huge advancement in yoga and not at the mere whims and fancies of belief.