Your conviction must transcend into your countenance. It is the very thing that will not only win sales but win souls.

A man who waivers in his conviction of the product or the purpose to which he was assigned, will submit to the hijackers of life. What you have is valuable and should be treated as so. If a leader does not believe in what he has to give, he will always be directed by others. We give not what they want but what they need. Have the boldness to stand behind your product and purpose. This is what drives profit naturally and spiritually.

James 1:8