That is very usual. The really active part of the mind is engaged in the work. It is the mechanical mind that is left to itself to think and its way of thinking is just that.Sri Aurobindo
Letters of Sri Aurobindo
Volume 1. 1933-34
Fragment ID: 16554
1933
While working I become too weak to stop the physical mind from thinking all sorts of useless things.
That is very usual. The really active part of the mind is engaged in the work. It is the mechanical mind that is left to itself to think and its way of thinking is just that.