First of all, I have to introduce the subject with the phrase: "To be or not to be, that's the question ..." As the third act begins, the first scene of the famous Hamlet, written by William Shakespeare in the seventeenth century; whose Philosophical content is deeper than it seems. In fact, it is considered as the precise synthesis of any mental process of indecision and doubt, especially of the existential type.

On the other hand, I have to mention a Latin phrase born as a Philosophical approach by René Descartes "cogito ergo sum", which can be translated as "I think, therefore I exist" or literally "I think, for I am so"; of great relevance as a fundamental element of rationalism and existentialism.

This phrase contemplates the transcendental spiritual activity of meditation, together with a mind that thinks, processes and leaves brain record of everything perceived through the senses.

An example of the above, could be to reflect on the own life that we have, each of us, marked by the fact that we are a mind and live our reality to see that we think and although it seems contradictory not necessarily the reality is to process everything perceived by our five senses.

Complicated example that can be understood better, by remembering the approach of the movie "Matrix" in which a computer dominates and absorbs the energies of human beings; deceiving their minds by transmitting false ideas and sensations, but making them believe that they live a normal life in a real world; when the absolute reality is that minds are controlled by false information generated by "Matrix".

That is, from Shakespeare's indecision to the Descartes hypothesis, the "Doubt of Reality" is philosophically posed, since if "Matrix" or another evil entity controlled our minds, the only error of reality could lie in the deception of our scenarios and perceptions as a way of life that we lead, by receiving the false messages and signals in our brains and make us believe in them as if they came from our five senses from an existential reality.

Therefore, I can affirm that even when we receive false data from reality from our senses, generating the error when interpreting the reality; it will remain an "absolute truth" the reality of the fact that "I am a mind, I think and therefore I exist".

In contrast, the other elements of the alleged reality I can not affirm or deny with absolute certainty, because they depend "on the glass with which we look", from the perspective of the observer or deception to our senses and our brains.

At this point, I infer that our lives are completely based on making "acts of faith" and the gesture of believing or not in any entity, phenomenology or "thing that happens" in our minds, so it will always be an act of Faith. Because even skepticism can lead us to perform an act of Faith; Assuming that the only thing I can assure you is that first "I think, therefore I exist and I am" a mind that receives and processes ideas.

Who am I? How do I exist? Who are you? How do you exist? Existential dilemma that we have many people, although ignorance, custom, stupidity or neglect is not fully recognized; because there are very few people who know moderately or manage to understand their own SELF I.

By way of "Tangible Evidence", are the facts that most people are led by routine life in the form of customs, by the designs imposed by the "media" and their bombings of mental and commercial control (with subliminal or direct messages), by the established fashion or by the thoughts, sayings and actions of other people; going through this existence as simple and tame farm animals.

What are the Proof? Vices, Materialism, Fanaticism, Taboos, Ignorance, Mediocrity and Labor Slavery, among many other proof that modify our reality, and prevent us from recognizing the truth of Who am I? How do I exist?

It is advisable to stop the daily routine, meditate for as long as necessary, to know as accurately as possible your own: Who am I? How do I exist? And once we have it clear, we can reduce or eliminate more easily our anxiety, stress, loneliness, depression, vices, bad habits, fear of change and unhappiness, among other negative aspects falsely imposed on our life "unreal" by the evil entities that pretend to seize our mind.

Because when we meditating, reacting, maturing, taking full control of our real life and then enjoying all the good that life offers us, immersed in our own reality, we can recognize ourselves and Each one also say that: