Jeff Keller
Motivational speaker and author
Jeff Keller is a motivational speaker and author who writes about personal development and the value of a positive mindset.
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เกี่ยวกับ Jeff Keller
Jeff Keller started out as a lawyer before changing careers to speak and write. He is known for his focus on personal development and positive thinking. His work looks at the power of thoughts, words and actions in shaping how people pursue success. His book Attitude Is Everything is in our catalog.
