I'm not a particular visual-oriented person either, but I've grown in this ability.
While you read this, think about where your car is parked right now. You would have to be able to manufacture some kind of image, or you wouldn't know where to start walking if you needed something at the store right now.
What helped me, is to stop trying so hard, and to stop placing so much importance and attachment to being good at it.
I also tried to imagine what it felt and sounded like (my desired objective) and let a visual image form of itself.
HTH
Steve
