If it can be used again, it is not wisdom but theory.
You have two kinds of secrets. The ones only you know. The ones only you don't.
The best way to know your faults is to notice which ones you accuse others of.
Only half of writing is saying what you mean. The other half is preventing people from reading what they expected you to mean.
When I am trying to write I turn on music so I can hear what is keeping me from hearing.
Any virtue systematically applied becomes a vice. Morality is attention, not system.