David Goggins and Jocko Willink talk about "don't ask questions, just do it" ...we talk about the difference between being interested in something vs being committed to it; and how do you go from one to the other.
No matter what business you're involved in, "selling" is crucial...however, "selling" is crucial in day to day life, not just business - knowing "how to sell" will make you happier, lead to greater success, and make life easier.