I will write my personal history

I have never told my children much about my own history. So I am afraid they don't know well how I have lived until now. One day, my wife Ayako said we should write about our personal histories, and she intends to write her own history. To hear that, I decided to write it, though I don't know what I can write, and how I can write it..
 Today, I tried to begin to arrange my chronicle.
 I was born at Fukagawa, Tokyo in 1936. I was one of the twins, but my twin sister died right after her birth. My father often said to me,"When you were born, you were too weak, and the doctor told me that, if you would be able to bring up this baby, you would become a doctor." I, anyway, survived and entered primary school at the age of six, when it was during the second world war. When I was eight years old, Tokyo was under sever air raids by U.S., so my family had to evacuate somewhere. My family were my parents, my big sister (two years older than I), my younger sister( five years younger) and me. My father decided to go to Miyagi prefecture, where he was born. We left Tokyo on 27th, February,1945. By the way, on March 10th that year, Tokyo was completely destroyed by so called "the Great Tokyo Raids".