In this era we are, people love emotionally fixed things. They are more inclined to act when they hear about other people who have had such cases and have overcomed it.
If you can move their heart they would be interested in what you offer. A necessary fact to note is that your message must be about a resolution to a problem. You do not have to be J.k rowling, Chimamanda or Wole soyinka to write a winning story. Its all about telling it as you experienced it.
These are the three main topics to touch when storytelling for your business.

*Your customer story of how he foumd a solution to a problen through your business.

*Your business story. Every business had its rough start. Even multinational companies do face setbacks occassionally. If you can tell the story of these periods and how you came out successfuly. You can increase your customer base.

*Your personal heart story.
This should be more focused on how certain circumstances crippled you from being effective. It could be a period when you suffered from an illness and how it affected your business or maybe a particular business goal of yours which couldn't be met. At the end you should present your resolution to these hindrance.