Often we hear, "Is there a right time to die?" Of course there is: when one has been invited back home. When the Universal is waiting. The Light will invite you. The Doorway will open. You will know this with either your senses or your intuition or both. You will look outward ata the world and experience a sense of peace that only the opened Doorway and the Light can provide.
The inner self is as secret as God and, like God, it evades every concept that tries to seize hold of it with full possession. It is a life that cannot be held and studied as object, because it is not "a thing". It is not reached and coaxed forth from hiding by any process under the sun, including meditation. All that we can do with any spiritual discipline is produce within ourselves something of the silence, the humility, the detachment, the purity of heart and the indifference which are required if the inner self is to make some shy, unpredictable manifestation of presence.