Robin Koval has a very powerful voice. She's been a driving force in the advertising world for nearly two decades.

Some of her wildly successful campaigns include the AFLAC duck and the "Yes, Yes, Yes!" commercials for Clairol Herbal Essence shampoo.

Robin is the president of the Kaplan Thaler Group, ranked as the fastest-growing ad agency in the U.S. Her firm has won 13 Clios and has $1 billion in billings.

She's co-authored two best-selling books including her latest, "The Power of Nice."

She talked to Growing Bolder about why being nice can and does work in the dog-eat-dog world of business. 

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