In human education, the fact is that the individual must have a self-organized personality in the way that the person can control the self, behaviors, and customs and also follow a growth leading path in the life. The purpose of this paper is to identify either self-scrutiny or its necessity, reasons of ignoring the true self, also solutions and the effects of self-scrutiny in a morally and religiously based approach. This was a qualitative study and the approach toward reaching the objective was either inferential or analytical. This study also analyzed epistemic topics which were focused on reasons to extract. Also, in morality the main step is to know and organize the self. This is important since the creation of good moral and following a morally - based path is related to this issue. From another view point, knowing the self (self-scrutiny) is the foundation of knowing god (theology), it is also enriched with logical foundations. The research hypotheses are: 1) the only way to scrutinize the self is the individual and personal method since every human being has the dignity and individuality of his existence. 2) Knowing self (self scrutiny) is an internal method of scanning and excavating which every human being will start from himself and will reach to the self at its final outcome. 3) The amount of maturity and welfare in any individual is directly related to the amount of his self knowledge (or self-scrutiny). Finally, the only way to achieve salvation is to know the self. Knowing self (self-scrutiny) is the main doctrine of religion, foundation for theology, and the achievement of monotheism. When an individual does not know himself (has not undergone the self-scrutiny process), he is regarded as an alien which wastes all of his life to the cost of that wrong self-belief. The stronger the alien self, the weaker the true self would be. This strengthening and weakening process will last until the diminishment of self which is not any more capable of achieving welfare and perfection.