At death, we lose everything we thought was real. Unless we can let go of all the things we cherish in our life, we are terrified. If we cannot stop struggling to hold on to our old life, all our fear and yearning will drag us into yet another painful reality.
Remember the clear light, the pure clear white light from which everything in the universe comes, to which everything in the universe returns; the original nature of your own mind. The natural state of the universe unmanifest. Let go into the clear light, trust it, merge with it. It is your own true nature, it is home.
You must be ready to accept the possibility that there is a limitless range of awareness for which we now have no words; that awareness can expand beyond range of your ego, your self, your familiar identity, beyond everything you have learned, beyond your notions of space and time, beyond the differences which usually separate people from each other and from the world around them.