When it exists harmony and consistency between ‘ ‘ eu’ ‘ the experience the individual if keeps congruente; but when it does not have this harmony the individual is in the incongruncia state; it has a certain misalignment. The more it has disagreement between ‘ ‘ eu’ ‘ the experience, more the behavior is incompreensivo and the unbalanced personality. When the individual if finds in state of disagreement without if giving account of this, is potentially vulnerable to the anguish, the threat and the disorganization. On the other hand, in result of a critical experience, this state of disagreement it is tax in undeniable way; the individual if feels threatened and the image of ‘ ‘ eu’ ‘ if it disintegrates under shock. Moreover, if it makes necessary to see what it would be the defensive behavior for Rogers, that consists of keeping the structure of ‘ ‘ eu’ ‘ , in other words the defense presents an opposition to all sustainable change to attenuate or to devaluate the structure of ‘ ‘ eu’ ‘. In the field of the therapy, Rogers says that the important one is not the absence of directive, but the presence of the therapist, certain attitudes in face to the customer and of a certain conception of the relations human beings. In sight of this the paper of the professional in this conception is therefore, of catalyst, an agent who facilitates a given process, but that it does not determine. Ademais, exists a notion key in which salient Rogers the individual as the biggest specialist of itself exactly: The human being has the capacity, latent or manifest, to understand itself exactly and to decide its problems to it in way enough to reach the satisfaction and the necessary effectiveness to the adequate functioning. The exercise of this capacity requires a context of relations human beings positive, favorable to the conservation and the valuation of ‘ ‘ eu’ ‘ , that is, it requires relations unprovided of threat or challenge to the conception that the citizen makes exactly of itself.