只记录一天中所行之事的「核心」吧！

若看着＜核心＞来连结「一天的事情」，就能统统想起来。
若连＜核心＞都不思考，就会统统忘记。有背诵的方法。

Among the things you did in a day, record just the ‘core.’
If you connect the ‘matters of the day’ by looking at the <core>, everything will come to mind.
If you do not even think of the <core>, you will forget everything. There is a way to memorize.