Nancy Lee Bentley's Thanksgiving-inspired, YourTango.com article reprinted on Huffington Post. 

Whether or not you realize it, you’re in sales. “But I don’t make widgets or own my own business,” you say. If you think about it, you sell yourself every day to just about everyone you know. You sell your services to your employer and customers, your ideas and opinions to your manager and associates at work, your beliefs and values to friends and family, and so on.<br>

Your enthusiasm is a key success factor. Without question, desire, motivation and the belief that you can actually achieve your goals are necessary and important driving forces for success as well. However, without your enthusiasm, the passion required to go above and beyond and do what most others are not willing to do simply won't be there. <br>