Young professionals, I have one fundamental piece of advice for you: under promise and over deliver. Sell yourself well but never sell a company/client on your very best sales day. Sell them on a high average. For instance, there have been times at Nordstrom when I was the top salesman in the store. Do I harp on that in interviews? No. But I will speak of my consistent position within the top three in my department. Therefore, when I do show up and give more than is expected of me, it is a celebration. The problem often is that, when we over promise and under perform, we leave a bad taste in the mouths of those we’re working with. I personally cannot control the number of people who need résumés and cover letters. In addition, unless they take advantage of my interview prep, I cannot control how the interview goes. What I am able to do is provide them with the tools needed to be successful and coach them into succeeding. But all I promise is a great résumé. That is how you wow your clients/employers.