The Dale Carnegie Organization is promoting an audio set, Make Yourself Unforgettable, which takes an in-depth look at what the 10 essential elements of class and being unforgettable are, and gives you a clear-cut step-by-step guide for developing and embodying them. On the Nightingale-Conant website, you can hear an audio sample (on productivity) from this program. In this sample, the speaker discusses a basic law of success -- productivity equals achievement. The key is learning to become more productive.
Dale Carnegie and Nightingal-Conant are leaders in the personal development industry. They produce top notch products that people can count on. Personally, I've relied on their products since my days in high school. I recommend taking a couple of minutes to listen to the audio sample.