This will stop you second-guessing yourself

"Know thyself."

These words were inscribed on the entrance to the Temple of Apollo at Delphi in ancient Greece, where people travelled from across the world to consult the oracle. The fact that this was the first thing they were asked to consider before seeking answers elsewhere feels about right to me. People have understood for a very long time that knowing yourself is one of the foundations of a well-lived life.

And yet most of us spend very little time actually doing it.