Everything passes. This is not something that can be conquered; it is an inevitable part of the fabric of existence. Maybe it will one day be possible for people to live indefinitely. Maybe egomaniacs would live for thousands of years if they could. But it is not possible to live forever; the universe itself won't last (at least, in form hospitable to life) forever. And so the cessation of our consciousness is inevitable. We can't change this any more than we can change the value of pi.