I am not convinced that it's easy, or even really possible, to change from one thinking style to the other. Everything else I've read suggests this sort of cognitive leaning is largely innate. Do you have anything other than your own experience to suggest otherwise?

No one style is completely dominant in anyone, we use both depending on the situation. I don't think I could become intuition-dominant, but I've certainly learned to use my intuition more over the years – I'm less inflexible now than I was, say, in high school. Part of that was the transition from learning school science to learning real science - having to actually look at information and come up with ideas. More recently a lot of it is in having to explain ideas to strangers on a regular basis – needing to develop a better intuitive sense of what they need and where they're coming from.