"Sometimes we do not really become adults until we suffer a good whacking loss, and our lives in a sense catch up with us and wash over us like a wave and everything goes." - from The Sportswriter by Richard Ford
Return to a time of loss. Write into the ragged edge where life as you knew if felt torn off, evaporated or dissolved in some way.
As you retreat into the misery of the moment, let your current state of mind add texture from a distance.
What helped with the pain? Does it arise in similar forms with current challenges?
Write about what you gained or learned from the experience.