Fellow speaker,
Re-target your stories depending on the presentation situation. For example, if you have a story about how you lost money on a bad investment, and you are presenting to an investing group, focus the story on the need to research investments before buying. If presenting to a planning group, focus on the need to have a plan before taking action. If presenting to an entrepreneur group, focus the story on the need to take risks. With a little bit of creativity, one story can fit in with many different speech topics!
Creatively,
Tim