“Singleness of purpose is one of the chief essentials for success in life, no matter what may be one’s aim.” Rockefeller

The fourth strategic variable, perhaps the most important of all in sales and marketing, is the principle of concentration. This is your ability to focus all of your energies and resources on those specific customers or markets where you have the greatest chance of success in the shortest period of time.

Your ability to concentrate single mindedly on your highest value opportunities will do more to increase your return on energy than any other factor. Concentration is a key success principle in every field.

To get original ebook of Change Your Life Change Your Thinking by Brian Tracy, visit

Better still, visit for the daily review of each sub-topic. Your steps towards where you want to be start now.

“People often say that motivation doesn’t last. Well, neither does bathing – that is why we recommend it daily” Zig Ziglar

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