Who are you as a writer? Where do you get your ideas from? What kinds of things do you like to write? How do you get your personality and life experience into your writing? Reading other people's work, can be a great help to writing.Important people, places and things have an influence on writing for children, for example who you used to play with and where, when growing up.
David Hill has written about stories he heard about his parents and grandparents, when they were young. Writing about an heirloom or artifact, that is very important in your family's life, can be a good source of material.Sometimes we never forget certain experiences we have with other people and these can make good stories. People like hearing stories about other people.
Significant life experiences can be written about, for example, moving into a new place or someone getting sick or dying.