Remaining like a log is a metaphor taken from the Way of the Bodhisattva
You can tell the log that it is ugly, stupid, skinny, it will not change form.
You can tell the log you cheated on it and used another log for your fire, it will not react.
Management of our nervous system is a practice in remaining like a log.
It doesn't mean you don't stand for yourself when needing to speak up, it's about the *way* you do it.
You can choose to be defensive. You can also get caught up in your story and emotions and be reactive.
OR you can choose to remain like a log, to stay in your center, and let the energetic wave of emotion pass by.
Your self-expression is then grounded in a more neutral place.
Obviously, this takes practice and it starts with an intention.
The intention to stay in your center, to observe the initial reactive energy travel your body without getting caught up in it.
"Whenever there is attachment in my mind
And whenever there is the desire to be angry
I should not do anything nor say anything,
But remain like a piece of wood."
And lastly, it is a moment-to-moment choice. The French philosopher Jean-Paul Sartre said, "Life is a C between B and D". C being choice, B birth, and D death.
In each moment we can choose to be awake and present or we can choose to be reactive and powerless.
Reconnecting to the practices that help you regulate your nervous system is key in reaching equanimity.