Jim (https://www.thejimedwardsmethod.com) and Stew discuss (and ask for examples from the live audience) some of their best sales stories and why they worked:

A sales story can develop from your identity or origin story into an effective piece of marketing, but you have to be careful and not let it box you into a business that cannot evolve from that story and continue to remain relevant and in front of your market. 

Don't forget the Facebook Group Sales Copy Writing and Content Marketing Hacks with Jim Edwards for a community of nearly 25,000+  like-minded business owners
https://www.facebook.com/groups/copywritingandcontenthacks