How to write the preface of an autobiography

When writing an autobiography, one should generally briefly introduce one's background and life experiences, indicating the purpose and significance of writing an autobiography. For example, it could be written like this: I'm an ordinary person, born in an ordinary family, and I've experienced many difficulties and challenges since I was young. In the difficult process of growing up, I not only learned to be strong and independent, but also learned to be grateful and cherish. Now that I'm an adult, I've decided to write a book about my experiences and growth to share my experience and wisdom to help more people. Through this book, I hope to convey positive energy and encourage everyone to bravely face difficulties, pursue their dreams, and realize their own life values. When writing an autobiography, you should express the purpose and meaning of the book concisely so that the readers can better understand the content of your book.