Alternative reality

La vida es un sueño. What if you have never succeeded in things that you should have done, and all the possibilities just became impossible? With time going and us getting older, do we just eliminate these potential lives that we could have lived, for once?And what we can expect is getting smaller and smaller. In this journey from life to death, is it also from infinitivity to the final certainty? Or is it just a fragment of my being?

Do we really see things that we see, or just because we think we have seen them? Is this life of less than 100 years the Reality, or is it just kind of illusion before we wake up?

Is there one, or even more, alternative realities?