There is your Local Self, that version of you that likely moves around within a vessel of human flesh at the moment, a subset of the All that forever grows, changes, and dies; and then there is your Cosmic Self, that truer, eternal, universal version of you that is the All in its entirety and which will never change or die. In one sense, you are like a single leaf upon an endless cosmic tree, but in another equally real sense, you are the entire, infinite, cosmic tree, for it is all ultimately connected.
Everything requires the All in order to exist. Nothing can exist outside the All, nor be independent of it. Consider what it takes for you to exist. Aside from requiring the obvious, such as a brain, a heart, a digestive system, etc., you require all else beyond your apparent body. For instance, you require water to hydrate your body, an atmosphere to hold the water into liquid form, a strong gravitational force to pull in and compress gases into such an atmosphere, a planetary body to provide the gravity and to serve as a platform, a source of heat energy, like our sun, to warm things up. Atoms are needed to form these gases, planets, and stars. Space is needed for these objects to occupy, and so on. In short, you require the All, the entire universe, an infinite system, in order to exist.
The All is what makes any one thing possible. The All is required in order for any of us to exist, and, ultimately, no one thing is more important than any other. Each thing, no matter how insignificant it may appear, plays its part in sustaining you as well as the All. Therefore, since the All is required for you to exist, you should see that . . .
YOU ARE THE ALL.
You are the All trying to perceive itself, trying to understand itself, and trying to know itself. You are the forever cosmic tree, whose branches never end. But you are not alone. You are actually in infinite company. I too am the All. So is your neighbor. And so is the smallest house fly. But you are the All from your own special position in time and space. This position allows you to forever remain unique. But in a deeper sense, at our core, we are all the same. We all have our moments of fear, moments of jealousy, moments of embarrassment, moments of anger, and thankfully . . . moments of pure joy!