There are several popular self-improvement books, some of which are:
- Think and grow rich - Napoleon Hill
- The Power of Your Subconscious Mind - Joseph Murphy
- The secret - Rhonda Byrne
which suggest Autosuggestion as a method of succeeding in life, claiming you can alter your "subconscious" mind ("trick" it) into believing certain things which will later manifest in reality.
The wording in the books are quite lengthy, but here is some text which claims the helpfulness of the method, it is found on page 46 of Napelon Hill's book which is open source and can be found here: https://archive.org/details/Think_and_Grow_Rich (Pages 45 - 46 are where he introduces the method so can be good to read if you want a bigger picture of what it entails):
It is a well known fact that one comes, finally, to BELIEVE whatever one repeats to one’s self, whether the statement be true or false [...]
The psychologists have named this law “auto-suggestion,” and let it go at that. The name by which one calls this law is of little importance. The important fact about it is-it WORKS for the glory and success of mankind, IF it is used constructively.
On the other hand, if used destructively, it will destroy just as readily. In this statement may be found a very significant truth, namely; that those who go down in defeat, and end their lives in poverty, misery, and distress, do so because of negative application of the principle of auto-suggestion.
The cause may be found in the fact that ALL IMPULSES OF THOUGHT HAVE A TENDENCY TO CLOTHE THEMSELVES IN THEIR PHYSICAL EQUIVALENT
If you read that page and the end of the page before it, he also describes quite explicitely steps which are to be executed as part of the method.
I have known the idea originally as affirmations, and have trusted in it for some time.
My question is if there has been any research in the area?
I am not talking about relaxation techniques such as yoga, meditation and autogenic training (which according to Wikipedia has stemmed from autosuggestion).
My question can be put simply as "If I verbally repeat sentences to myself in relation to achieving certain goals, and use my imagination to make myself believe that they are in fact real, does it increase my chances to attain these goals?"