Ishavasya Upanishad: Mantra 6

यस्तु सर्वाणि भूतान्यात्मन्येवानुपश्यति । सर्वभूतेषु चात्मानं ततो न विजुगुप्सते॥ ६॥ yas tu sarvāa¹‡i bhÅ«tāny ātmany evānupaśyati sarva-bhÅ«tea¹£u cātmānaa¹ tato na vijugupsate Translation: He who sees everything and everyone in the Self alone, and sees the Self in everything and everyone, hates not anything or anyone. Commentary: He who sees everything and everyone in the Self alone, and sees the Self in everything and everyone, hates not anything or anyone. In the Bhagavad-gÄ«tā (15.7) it says: mamaivāa¹Å›o jÄ«va-loke jÄ«va-bhÅ«taa¸¥ sanātanaa¸¥ manaa¸¥-a¹£aa¹£a¹­hānÄ«ndriyāa¹‡i praka¹›ti-sthāni kara¹£ati "An eternal portion of Myself, having become an individual embodied soul in this world, associates with the senses, including the mind, and activates them". It is affirmed here that what you really are is an eternal portion of "Myself". That is, God lies in you... as you... your true and authentic nature is Divine... The fact that the Self that lies in the depth of every living being and the Supreme and Absolute Self, named Brahman by the Adwaita Vedānta, are one and the same, is clearly supported by the revealed scriptures. As an example we can see the Ba¹›hadāraa¹‡yaka Upania¹£ad (2.5.19): ayam ātmān Brahman... which means "this Ātman is Brahman" and in the same text (1.4.10) we find that most famous phrase: ahaa¹ BramāsmÄ«ti ... or ... ahaa¹ Brahmāsmi... or "I am Brahman". We also find the great mahāvākya: tat tvam asi or "thou art That", in the Chāndogya Upania¹£ad (6.8.7), in the dialogue between Uddālaka and his son Śvetaketu... Finally I shall quote that magisterial phrase of the great Ādi Śaa¹…karācārya... brahma satyaa¹ jagan mithyā... or "Brahman is the reality, the world is false".

नास्त्येव तस्मिन् तत्सुखसुखित्वम्। २४nāstyeva tasmin tatsukhasukhitvam |

In a similar way, through appropriate suggestions and mental messages it is possible to calm muscles that are tired and tense. Relaxation carried out in an attentive and relaxed way, helps to restore the energetic balance of the body, noticeably improving the quality of life. Its practice renews the energy of the organism when it depleted and even prolongs life. 2.         Relaxation in the emotional and mental aspects: Few can relax the mind in a conscious way. Yoga offers us an essential key by teaching that the body and the mind are two aspects of the same phenomenon and that the state of one is directly tied to the other. In this way, we can consciously induce a state of mental calmness through muscular relaxation. The physical body provides us with a path that allows us to influence more subtle spheres of our reality, mental as well as emotional.3.        Spiritual relaxation: Although relaxation brings repose to our physical body, and a certain calmness in the mental and emotional spheres, we realize that true peace is of the soul. Mental and physical relaxation are actually a preparation for spiritual relaxation to happen. The mind can be calmed, but cannot experience peace. Peace is the absence of the mind. Peace is a state in which the constant movement of the thoughts is completely stopped. Spiritual relaxation is only possible when we disidentify with the body and the mind. It means the discovery of our authentic nature as Pure Consciousness. Spiritual relaxation is repose in the Self, it is to relax in God, it is reserved for the great souls who have achieved an elevated level of interior cleanliness and have been graced with purity (photo number 220).The astral bodyThe human being is a multidimensional structure and there are various sheaths that envelop his soul: the physical body, called in Sanskrit the anna-maya-kośa, the astral body, called the liṅga-śarÄ«ra or sÅ«ká¹£ma-śarÄ«ra, and which includes three layers, and the causal body or kāraṇa-śarÄ«ra, with its sheath of bliss called the ānanda-maya-kośa.