The truth according to what the wisest thinkers of Humanity have shown us over the centuries can be expressed as: harmony.
And that harmony is said by those wise people who appear in the lives of people when they exist together: happiness, beauty, opulence, love and well-being.
The way to start attracting that harmony, is to oppose any form of lack, tare or disease, because our natural condition is to be healthy, and to be happy, because we were created perfect, is something that we should not forget.
We must learn to say No to all that we do not want, and YES to everything that is in harmony with our most desired dreams. In that sense, yes and no should be used to strengthen our mind and thus achieve well-being.
Going beyond the material and entering the field of metaphysics and particularly referring to "mentalism" is important to be clear about the concept of God, to understand many things. Identifying with God who is the All allows us to enter a state of grace ..
Identifying with God, the Universe or whatever you want to call the great creator, one has more access to that truth that is harmony.
God is the whole, for he frames everything that exists, that is, the animal, vegetable, mineral kingdoms, all the planets, the solar system, all the stars of a galaxy and even more all the galaxies of the universe and the immense and immeasurable space between all of them. God is the visible and the invisible, is the manifest and the unmanifest, as well as the material and spiritual.
That is to say, there is nothing in everything existing and non-existent in what is not God. That is why God is considered the Macrocosm, and of course, since God encompasses everything, it also includes the human being, so we can say that man possesses the immanent God, that is, the microcosm; a God in miniature that can be called as "soul" which is the superior state of the human being.
In this state is when you have the supreme connection, when the understanding is clarified and the wisdom grows. In these conditions the harmony that is the truth of our lives is closer.