If you’ve just remembered something long forgotten, something that’s been on the tip of your tongue or the back of your mind, write it down. Don’t tap the side of your head and say “I’ve got it all right up here.” During the process of revising my story through several drafts I came across whole paragraphs I had forgotten I had written years before, stuff I wouldn’t be able to recall.
No matter how small the detail, write it down. After a while you may look through your drawer full of details and snippets and ideas and discover you have an entire story waiting to be written.
I am guilty of this. Thank you for the wise advice.