Write a one-minute autobiography.
Don’t necessarily start at the beginning, and don’t worry about the ending. Indeed, do not let any kind of chronological order hinder your effort. A good place to start is the first thing that comes to mind. Once you start writing, other memories will pop into your head. Go with them. The interruptions enhance the flow.
Once the minute is up, read over what you have written, and then immediately repeat the exercise. Keep going for as long as you can.