Think of a something that happened to you that
That something is your story.
An alternative way of finding your story is to first think about the message you want to bring across. What is it that the audience should have in their minds when leaving? Then, think about why this is so important to you. Usually this will have a nuanced and complex answer. Try to pinpoint it to a specific moment in your life where you learned that this is so very important. Thats your story
Now that you have your story. Try to fit it into the general structure above. Tell the story, be direct, only elaborate where it serves a purpose. Such a purpose would be to pull the audience in, increase their immersion, make them feel your emotions, etc.. Definteley worthy of lots of time are the pain you had and the learning experience that relieved that pain.