[davibu]

First of all, you need a really "good" story. What is "good" depends on people, there is no general rule for that.

Make sure people are ready to listen, try to get their attention. Take a smile and try to make your voice deeper if you are a man, or adjust your pitch if you are a woman. If people seems not interested, don't be afraid and continue to talk anyway.

Talk louder if necessary (but not too much). Look at people in the eyes, and be confident.

Keep it short. Keep in mind that nobody cares about your life or your stories, they care about THEMSELVES.

Be always positive, even if something makes you angry or sad. There is nothing more annoying than listen to someone complaining.