Organize what you've written according to cause and effect and action and reaction. Ordering events according to cause and effect is a natural process. Your car broke down, so you called a tow truck. That's cause and effect. You received a promotion, so you bought a house. Action/reaction happens paragraph by paragraph. He said "No," so you said "Why?" That's action/reaction. She set a wet glass on the table, so you placed a coaster under it, and remembered how your mother used to crochet pretty little coasters and starch them. That's action/reaction.
Have you ever read an autobiography? Benjamin Franklin’s autobiography, for example, is an exceptionally powerful one. “DEAR SON: I have ever had pleasure in obtaining any little anecdotes of my ancestors.” That’s how it starts. But, Benjamin Franklin was an exceptional person, after all. That’s the point: autobiographies are for exceptional people. You’re exceptional, too. You have a special story that’s worth sharing. The only thing to learn is how to write a life story about yourself.