Imagine yourself in a state of perfect mindfulness, but instead of focusing on your breath or a mantra, focus on the fact that you are focusing on your breath or mantra.
That's right, it's like a meditation technique for people who are really, really good at meditating.
Next Technique: The Inverted Pyramid of Self-Discovery
Or, you know, just close your eyes and try to focus on the fact that you are trying to focus.