Here's a thought - words go in and out of the brain, rarely, if every, encountering the mind. When customers actually do listen, (instead of daydreaming, thinking about what they've been doing or have to do next) they're constantly filtering your words into their belief systems, reacting emotionally to what they imagine you meant, by what they believe you said, etc. etc. etc. Visual images, however, tend to lodge deep in the part of the mind associated with both memory and emotion.
So instead of "telling," get the customer to imagine, with hypothetical situations "Imagine you were able to..." and 3rd-party stories replicating a situation tightly linked to the customer's world and potential needs. "The other day I was talking with a customer who..."
Remember to use language to create images for the customer to see in his or her mind, as if you were narrating a videotape of the scene.
A picture really is worth 1000 words.