The 30 second habit with a lifelong impact.
“He was in his early teens, about to start senior school, when his grandfather took him aside and told him the following:”
‘Immediately after every lecture, meeting, or any significant experience, take 30 seconds — no more, no less — to write down the most important points. If you always do just this, said his grandfather, and even if you only do this, with no other revision, you will be okay.’