You can begin anywhere you want about your life. Do not become trapped in writing about being born, going to elementary school and then onto higher grades. These parts of your life can come later.
Completely ignore what you learned in school about writing essays. Blasphemy, you say? Yes, I do say. Do not be concerned with punctuation, typos or revising as you write.
Just tell your story. Start in the middle. Or anywhere along the trails of your life — like maybe when your mom gave you cooking lessons after you burned out a treasured frying pan. How about driving lessons from your impatient dad? Did Uncle John take you fishing and forget to bring the worms?
Maybe you ditched school one day and got caught. Or didn't get caught. What did you do? And why?
Recapture your coughing siege and nausea attack when you tried your first cigarette or your first drink.
If you grew up on a farm, try not to write: “I got up and milked the cows, and then walked a mile to the general store to buy supplies.” Rather: “There were three of us kids in the small, two room home and all of us had assigned chores. My sister, Anne, worked in the kitchen alongside Mom, while my brother, Ben, and I planted the vegetables.”
You're telling a story. Don't get stuck with rigid writing rules. You are simply writing a page or two about some part of your life.
Be sure you include your older relatives in your research. Here comes the emotional part of this column. I waited too long. Writers have to write. This is what we do and thus, I am writing a memoir. But my parents, uncles, aunts and grandparents are all gone. My life story, even it were only a few pages long, as I am suggesting that you create, is not as rich as it could be because I don't have access to 150 years of family experiences. I urge you not to wait.
If writing is difficult for you, record your older family members. You don't want to delay getting your story and/or your family's story written or recorded. Maybe your teenage child can sit with Grandma and Grandpa for an hour of video recording.