You could start off with a question or a major event which has impacted your life so far. Ask your parents about ancedotal things about your early childhood that told them what you might become. Use short examples of special events in your life and how they are all leading up to this point in your life. You could right in the third person as if you were watching your life take place and make comments about it starting from birth. Get comments from previous teachers, peers, coaches etc. Make it humorous so as to stand out from the rest of the pack who just do a timeline essay. Talk about what interests you and future plans. Hope this helps.