If you were to lose exactly 10 years of your memory at exactly age 30, to you it would seem like the day before your 20th birthday you were 19 and the day after you were 30. There is something i refer to as a "snap", this snap makes the person experiencing this loss of memory to seemingly jump forward in time from age 19 to age 30.
If this person has lived these 10 years perceivably to the rest of the world but not to them it seems that this loss of memory causes time to seem to snap.
If there is nothing after death this includes consciousness and memory. By my conclusion this snap should have already happened to us all when we reach the day in the future of our death. This day is the equivalent of of the 30th birthday and the birth day is the equivalent of the 20th birthday.
Believe me, I am trying.