What key things should you make a note of or write down to help in case you lose your memory?

Thanks for A2A. Good question.

I was fond of writing diaries from early years, I mean around 18/19. It was different style on my part. I wanted to improve my writing. Records were not given that important till I landed in Brunei Darussalam where I started daily notes.

Therefore, I have missed many useful entries of my early decades. So, this question leads me to think about what I missed earlier.

Here are the points that come to my mind:

Note in clear manner that you are able to refer back and find as per the requirement. For that, you may also maintain yearly page (a page of important events on yearly basis).

Note date-wise, struggle-wise and achievement-wise separately.

Develop skill to note things that are likely to be referred back on some occasion(s).

I you have pictures too, then those should also have a linkage with noting.

Keep an index of what you have written (easily linkable and recallable).

Keep reviewing records for corrections and adding important events in parallel.

Refer back regularly so that you are linked to the past healthily.

You can add more points. I have set the ball rolling for you.