I've been working with Jason Miller's Pillar and Spheres meditation, which is great. I suggest you buy Strategic Sorcery and try it out. I've had great results but of late, they've tapered off. I've found in nearly impossible to get my mind to be willing to meditate for more than five minutes or so. This is a very annoying pattern to my work. Something works great, then I loose the handle. It can take me a long time to get it back.
This time, I am just going to be consistent and keep plugging away. No breaks.