As mentioned in the book Krishnamurti stated that non-judgment is the highest form of Wisdom.
When performing a routine (daily) task, try to observe the task and describe it. For instance when you brush your teeth observe the:
Notice when your Mind starts to judge (e.g. I am brushing my teeth slowly). Accept that you are making a judgment, just observe that you judge. You could describe it as 'judging' and continue with your observation. The goal of this exercise is to notice the difference between when you judge and when you observe