Notes. "I can instantly center my whole attention on the
door-knob. Feel that I have thoroughly mastered this exercise and
that I am ready for another."
You have practiced this exercise enough, but before you start
another I want you to write a summary of just how successful you
were in controlling the flitting impulses of the mind and will.
You will find this an excellent practice. There is nothing more
beneficial to the mind than to pay close attention to its own
wonderful, subtle activities.