[uberuberuber]

It's obviously very hard to convey how much one advances in their practice in an objective manner without having an fMRI. The only real 'data point' I have in support of my experience was how radically my ability to watch my breath and maintain my posture changed after the course.

Before the course I was more or less haphazardly trying a breathing meditation where you count your breaths (say 5 or 10), and with a bead necklace I would count how many cycles of 10 I would manage in an hour. If my mind wandered during the 10 seconds then I would start again from 1. I averaged perhaps 20 successful cycles in an hour. I know this sounds, and probably is, atrocious. It was a sobering insight into how distracted I was by the rush of thoughts despite my own deliberate efforts at modulating those thoughts. Additionally, I would feel compelled to re-position my body every few minutes. The slightest pain or itch was enough to break my will and force me to readjust the pile of pillows I relied upon, again despite my own conscious desire to not move or scratch.

After the course, I can now sit comfortably on a simple Zafu cushion for an entire hour without losing awareness of my breath more than a handful of times, and certainly without having to move a muscle.

I don't expect my own anecdotes to convince anyone of the efficacy of these courses. I can only strongly encourage anyone interested to 'walk the path' by attending a formal course to give it a try. I have already signed up for another course to further my own practice.