Sixty Days and Counting by Kim Stanley Robinson

Charlie wanted to live on in this life forever. Or if not forever, then as long as the stars. And he feared change, as being the probable degradation of a situation that couldn't be bettered.

But here it was anyway, and there was no avoiding it. All the repetitions in the pattern were superficial; the moment was always new. It had to be lived, and then the next moment embraced as it arrived. 

p. 55

The eternal now. It is the only moment we ever have. We have to be in the moment and live it as it comes. And it is always new. It just depends on our point of view.

Yeah.