I attended one of Bill Dettmer's workshops a few years ago and it was extremely insightful. The blueprint ("Future Reality Tree") we built for a topic in my org

I attended one of Bill Dettmer's workshops a few years ago and it was extremely insightful. The blueprint ("Future Reality Tree") we built for a topic in my organization turned out to be spot on. It's not magic, but it helps to clarify your thoughts, present a consistent argument and understand which problems to address first. (Unfortunately, I didn't do well on the execution part at that time... sigh)