This reminds me of a saying attributed to Arthur C. Clarke: "A technology sufficiently advanced is indistinguishable from magic." For someone who didn't know what you were doing, the transformation in your productivity might seem magical.It is interesting that you say there is nothing magical about the materials you suggested. David Allen's materials have been "magical" for me at the runway level. I mean, I never thought I could handle all my shifting responsibilites in such as effortless way. It really is great. I guess I am looking for something similarly magical for the big picture.
I think the "magic" of life planning is similar. If you take time to think about your life's direction in a disciplined way, formulate plans to make that happen, and consistently and skillfully act on those plans over a sufficiently long period of time, you will have a satisfying life...like magic. I use the acronym FIPS to describe this. It stands for Focus, Intensity, Persistence, and Skillful means.
All that being said, there is one technique that is magical - writing things down. David touches on it in GTD. It has two magical properties. First, it is an invaluable instrument for supporting sustained thinking over a long period of time. Second, writing down desired outcomes just seems to do something to your brain to start moving you toward them. I've occasionally looked through some old written goals and found that I had realized some of them. All I remember consciously doing to pursue the goals was to write them down. Over the intervening period, I "just did" whatever it took to make them happen. I've seen the book Write It Down Make It Happen by Henriette Klauser mentioned a couple of times recently. I haven't read it, but when I start seeing a book repeatedly cited, I start thinking I ought to.
While I'm in book recommendation mode, if you are in to Neurolinguistic Programming (NLP), you might want to take a look at "The Secret of Creating Your Future" by Tad James. It covers a lot of what we've discussed, but also adds some NLP techniques for dealing with sabotaging emotions.