You will not question the statement that what you do with your life is the combined result of heredity and environment. At the same time you doubtless possess a more or less hazy belief in the freedom of your own will.
The chances are that in any previous reflections on this subject you have magnified the influence of outside agencies and wondered just how a man could make himself the master rather than the victim of circumstances.
You now realize that your environment is an environment of thought, that your material universe is a thing your own
making, and that you can mold it as you will simply by the intelligent control of your own thinking.
Running Your Mental Factory
In Book I. you learned that—
I. All human achievement comes about through bodily activity.
II. All bodily activity is caused, controlled and directed by the mind.
In this volume you have added to these propositions a third, namely:
III. The mind is the instrument you must employ for the accomplishment of any purpose.