If you are feeling totally at peace, then likely all feelings of the fear of death are gone. Life and death are really a duality. Your soul is simply wearing your body, and your body has the soul inside of it. Just like a pair of clothes, the outer body wears out, and the soul will exit. Don’t be fooled by the outer appearances. If you take off your clothes, do you still exist? Do your clothes miss you? Do your other clothes on the floor feel at a loss because you are not there? Your soul and your body are absolutely one.
The body is really just a soul that you can see because it has clothes on (a body). God is not somewhere out in space sitting on a throne. He is here right around us, He is in the sky, the ocean, the trees, the rocks, the mountains, everywhere. Once you realize that you are really in fact one with everything and everyone, in life and in death, you will realize that death is one of the greatest illusions of them all. Albert Einstein said so as much, he wrote that the greatest illusion is that where one thinks he or she is different and separate from the universe. Whenever you look into a mirror, it is just like the universe looking right back at you, so said the spiritual guru, Deepak Chopra.
For everyone death is a common thought of speculation and frequent anxiety. Nobody ever can know for sure what happens in the time of death for us. It is and always will be a mystery. There are so many accounts of near death experiences where the person who comes close to death returns with a complete lack of fear of death. They know that there is an afterlife which is the same as their “before life”…that they were never born and thus never died.
Even if you were to assume that death was final and your consciousness would die, Epicurus thought there should not be any anxiety in the face of death because such a fear is irrational. Epicurus exhorted firmly that we should not fear death because, “Death, the most frightening of bad things, is nothing to us; since when we exist death is not yet present, and when death is present, then we do not exist” (Menoeceus, a letter to). Epicurus would respond counter-arguments that we should fear death by stating that we no longer exist to experience the deprivation of life and therefore could not be bothered by it. Irrespective of whether you believe you will “survive” death, it should make no difference on how you live on this life because you have absolutely no control over what happens after you die.
Even from an “atheist” point of view, the argument that Epicuus states is that it is not rational to fear an event or time which we will not experience. Some anxiety about the future for various reasons can promote a will to do good things that will carry on, but to dread things in the future that we will not experience, things which may never happen, is totally irrational. Fearing death falls into this category. Fearing an experience that we will not have is hard to justify. Think of it this way, it makes just as much sense to fear death as it does to fear something that will happen three hundred years from now.
If there is a “soul” apart from the body (this is termed dualism), then, potentially, we could experience something after death. Epicurus stated that the soul without a body can not experience physical pain – as it cannot have any qualities of a physical object – and so we can not fear physical pain after death as well.