It isn't all about you.
Selling a product is tough. Selling yourself as a job candidate is tough. Selling your company to an investor is tough.
All seem like different kinds of sales jobs, but they usually all fail for the same reason: You.
It's not that you're not good enough. You could be a persuasive salesperson. You could have a killer resume, with all the right industry experience and degrees. Your app could be the next Angry Birds.
But, if you're not achieving your goals, it is probably because....
Read more: http://www.entrepreneur.com/article/237754