The ancient rishis or sages referred to the body as ‘Purusha’, which means town. So, you are not an individual person but a moving township! It is like there are so many cities on planet Earth; and Earth itself is revolving and moving around the Sun. In the same way, there are so living beings inside you, and you are moving around. The soul lives in this town, or the body, that moves around.
This body is changing everyday and yet something is not changing. To understand this, you should study a beehive. What keeps a beehive there? It is the queen bee! In a beehive but there is only one queen bee. Once the queen bee is gone, everything disappears.
In the same way, our body has billions of cells, and each cell has its own life. Many cells are being born everyday and many die. And in there, in that tiniest of the tiny atom, is located the queen bee - the atma (self) which is non-changing. It is everywhere, yet nowhere. It always remains. If that is not there, everything else goes away. That is the queen bee and that is what you are.
Locating the queen bee within you and relaxing and reposing in that atom is meditation. Untouched, unruffled, unconcerned with what happens to the mind, intellect, ego. It is just there, just enjoying. The Upanishad has also declared that once you get a glimpse of that unchanging aspect in you, then everything else is immaterial.
Knowing this, everything becomes glorified. When you are centred, ego becomes all encompassing. Body glows, intellect and memory become sharp. All layers of existence glow when you have a glimpse of the Being. Nothing can shake you with this knowledge. You will feel at home with everybody. There is no difference between the Divine, you and the Guru Principle. It is all coming to one thing - the queen bee.