Napoleon Hill started his career teaching courses on selling and advertising, basing his classes on the premise that a positive attitude, relentless personal development, and consistent hard work were the keys to success -- and getting rich.

For the next 40-plus years, Hill wrote ten books that have sold over 100 million copies. (Eighty years later Think and Grow Rich still ranks high on Amazon sales charts. )

And in the process, he became a relentless producer of motivational quotes.

Here are some of Napoleon Hill's best inspirational quotes on purpose, mastery, self-discipline, imagination, initiative… basically everything you need to achieve success (in whatever way you choose to define success):

"Tell me how you use your spare time, and how you spend your money, and I will tell you where and what you will be in ten years from now."

"A goal is a dream with a deadline."

"The man who does more than he is paid for will soon be paid for more than he does."

"Don't wait. The time will never be just right. Start where you stand, and work whatever tools you may have at your command and better tools will be found as you go along."

"Some people dream of success, while others wake up and work hard at it."

"Most great people have achieved their greatest success just one step beyond their greatest failure."

"Success comes to those who become success conscious."

"Any idea, plan, or purpose may be placed in the mind through repetition of thought."

"When your desires are strong enough, you will appear to possess superhuman powers to achieve."

These quotes are in audio format with a powerful voice that help you everyday of the year.