This has been my bug-bear all my life to the point of avoiding using it. I have it written on a yellow sticky and attached to my pc screen.
Sometimes you forget to spell the easiest of words. I had a recent blank on the word
'of', I kept writing
'ov' !! I knew it was wrong but couldnt remember what was the correct way to write it and had to call my husband and whisper my request down the phone! That was scary, I was thinking dementia, senility, care homes....

But that was a couple years ago