When you die you forget. Death is a sleep, a forgetting. You forget about your previous lifetime. The essence of your being is the same. But at death, the personality dissolves
It is really important that you live in a place that has good energy. Where you sleep, where you dream, where you meditate, where you spend a lot of time is key.
Humankind has no idea what existence is, at this stage. They're all dreaming, they're all asleep... Once in a great while a fully awakened one is here, observes everybody is sleeping and leaves, quietly.
We are alive for a certain period of time in any given lifetime. We are competing against time. It is a race to see if we can wake up before we go to sleep again. That is the challenge.
When you meditate make sure you stay awake. If you are falling asleep get up and splash some water on yourself or sleep until you are refreshed.