"The man who acquires the ability to take full possession of his own mind may take possession of anything else to which he is justly entitled"

This quote by Andrew Carnegie speaks with the power of the mind and the potential of the person. It suggests that if one can acquire control of their own thoughts and feelings, they can acquire control of anything else they want. This is because the mind is the most effective tool we have, and if we can find out to utilize it to our benefit, we can accomplish anything we set our minds to. Carnegie is recommending that if we can find out to take complete possession of our own minds, we can seize anything else that we are entitled to. This could imply anything from product possessions to success in our careers or relationships. Eventually, Carnegie is emphasizing the importance of mastering our own minds in order to accomplish our objectives.