Our mortality, our Death, can be experienced as our friend. 

We can consciously live our lives knowing that death can come at any time-now,now and now.

For an advanced Buddhist Practitioner the time in the Bardo can be said to yield the opportunity to choose to be of greater service to all sentient beings.

Most of us will not have trained enough, however, so it can be said that some sort of our essence comes back according to the fruits of our many lifetimes of karma.

However, in that light, all we have is the ever flowing moments of now in which we can choose to do what is best or at least better.