Confidence as key to success in sales. Can you learn it?

The term „insecure salesperson“ sounds almost like a joke. Without sufficient confidence, you will never be able to succeed in sales and you will cease to be a salesperson very shortly. No matter what your field of business is, if you don't believe in yourself, you can never succeed in attracting clients and prospects. However, there is good news – confidence can be learned. How can a salesperson achieve self-confidence and ambition?