Writing first lines

In the short story class I've taken the instructor - Nina Hoffman - encourages students to write first lines for stories. These first lines generate ideas for the story and aim to generate interest in the reader. I took up the challenge and over the past several days I've written opening lines for each of the fifteen chapters I envision for my reorganized Dubious Grief. With each attempt at generating first lines my insight into what each chapter is about emerged more clearly. Some of my chapter titles changed as well as two section titles. This exercise has brought clarity to some hazy concepts. And I now have a better roadmap from which to rewrite my story.