Lost in time and space

Who am I, and how many?
Is this real or that?
Or both, depending on where you stand to look?

How do I know what is or was?
Is it the same today that is was yesterday?
Will it be tomorrow?

One day the sun is warm and caring.
The next day it burns my flesh away.
Is it the same sun?

How can I survive this pain?
Is it even real? Nobody else seems to know it.
And nobody seems to care.

Do I even want to survive?
Is the fact that I am asking this question
An answer in it self?