Are you losing your mind?

Although it is well known that sleep boosts memory, scientists have shown sleep improves your chances to retrieve vital facts hiding in a corner of our brain.
They used subjects in two situations. The people taking part had forgotten information during 12 hours of being awake. However, after a night's sleep they were twice as likely to be able to remember the details.
The lead psychologist stressed that sleep almost doubles your chances of remembering previously unrecalled material. The post-sleep boost in memory may indicate that some memories are sharpened overnight. This supports the notion that, while asleep, we actively rehearse information flagged as important.
The doctor believes the boost comes from the hippocampus, an inner structure of the temporal lobe, which unzipps recent episodes and replays them to regions of the brain originally involved so you play out major events of the day. Source: The Telegraph.
As we get older memory along with all our functions begin to decline. We have to work harder at maintaining our retentiveness if it’s important to us.
The good news is that we don't have to sit back and let it happen without a fight. But anything worthwhile takes work.
Use it or lose it.

Our mind needs water, nutrition, rest and exercise, fresh air and nutrition; the mind must be active and always learning; the mind must be challenged. Our minds are capable of much more than the daily and routine tasks we ask of it—the things we need to do for survival or livelihood. But the mind also needs an active life. Get outside and do more. Source HubPages.
Okay, there are many people like me who can't get out and socialize. What's left for us? We're advised to tell our family about our past, to link a part of our life to what they are doing. An example would be to relate their smartphone to us running to the telephone box to make an important call. But, those of us with no family around have to resort to other ways to maintain our memories.
We are all special, unique.
If you're older, I recommend writing the story of your life. Make a start and more information emerges out of the corner of your mind where it's been stashed away. Often I wake recalling a detail I'd forgotten.
Do you remember everything that ever happened to you? Or do you open a cupboard and forget what you were looking for?