Here's an off-the-wall idea--but some days I find writing tips a little difficult.
Make a calendar with your ancestor's dates of birth on it. Then on the ancestor's birthday, review the information you have about that person. This might help you find something in your files that you had forgotten.
Today would have been my great-grandmother Ufkes' birthday--she would have been 114. She was born Trientje Marie Janssen on her parents' farm near Basco, Hancock County, Illinois.