The trouble is, some people don't get inspiration from story plans. If your Learning Style is Holistic, you're not a planner. Asking you to plan your story before you put pen to paper (or fingers on keyboard) is as productive as asking you to squeeze a piece of coal in your fist until you get a diamond.
"Start at the beginning", is another favourite bit of writing advice. All very good for people whose Learning Style is Analytic. Analytic information processors like starting at the beginning and progressing step by detailed step to the logical conclusion.
Are you a Holistic or an Analytic writer? Find out here.