It makes sense about not continuing with "business as usual" — I couldn't do it, either. But I can't see ghost writing as being satisfiying for someone with as strong a voice as yours. Being an evangelist for the likes of Apple or Adobe might be cool, but would that let you continue with the stream of consciousness riffs that have obviously been satifsying for you — and been so energizing for us, your readers? Don't know.

That aside, I think that a multiple-contributor blog would give you support and provide some other perspectives. You could combine this with your ideas on coaching/ghostwriting and work with 'intern' contributors to hone their skills, see their work supplying your site, and give them the tools they need to take your philosophies and understanding out on their own tangents. It might give you a regular supply of fresh, new writers and keep things going while allowing you to step back a little. (If you did go with the intern idea, drop me a line, will you? *g*)

I think that you'd probably do well in a consulting role where you are helping companies who want to improve in the area of creating passionate users (products and websites). Your knowledge of the field is shown well by your blogging, and maybe getting out in front of people will give you more of a reason to stay passionate about this subject area (if not the blog itself).