Hey -- sorry for the delay, things have been hectic, and I wanted to give the best answers I could.
How hard was for you to follow strong discipline and diet that they request? I am wondering, for example, about craving for smoking, as I understand that wouldn't be allowed. Did you have any crisis having to meditate all the time? I understand result is miraculous, but wondering about the 'journey'' -was it miraculous as well?
There are a couple different ways I could answer this. I think the most direct way to answer the first part of your question is to say that the goal of vipassana is to train your mind to remain equanimous by maintaining awareness of external stimuli and your reactions to those stimuli. The technique is based on the idea that awareness of sensation on the body is the root level of the mind -- the most basic form of awareness, something even invertebrates possess (I'm substituting my own paraphrasing here, they explain it a little differently). So you practice awareness and equanimity like scales on a piano, simple exercises, and gradually retrain your Pavlovian stimulus-response to stimuli in general. The point is that anything you experience is an opportunity to practice, and there will be many unpleasant or otherwise disagreeable stimuli. It's all part of the course -- it's all there to be experienced.
This isn't to say that torment is the point of it. It's not at all. They try to make us as comfortable as they can, within reason, and moreover equanimity in response to pleasant experiences is just as important. Most of the rules are put in place for very practical reasons, not all of which are clear at the outset. In the case of smoking, I imagine the issue is that it could be a distraction to other people. In all seriousness, no one searches your luggage or your room, so if you wanted to smuggle in a few cigarrettes, then sneak out silently at night to smoke them, I bet you could easily get away with it. That wouldn't be a problem. The problem would be that you would be practicing deception in order to accrue benefit to yourself, to make yourself more comfortable physically or mentally. I feel like sincere effort is sort of the catch-22 of vipassana -- it fosters it, but also requires it, and sincerity is something that unfortunately is very difficult for people like us. I think deliberately practicing any kind of deception could really hamper one's progress.
Anyway, you asked specifically about my experience. In my case, a desire for success and self-improvement was my foot in the door. To be blunt, the way I saw it then, the more difficult the course was the more awesome I would be for having come through it. I was looking for an Everest. So no, in my case there was no difficulty at all following the rules. The difficulty came when I was forced to accept that I could not control the process and use it as a tool for my own edification.
So, in a nutshell, this was my journey:
First courseMe going into it: I am going to do this better than anyone here and develop profound insights into the source of my unhappiness, and be a better person.
What happened instead: I developed no personal insight, but instead suddenly and unexpectedly felt genuine love and empathy for the people around me. Interestingly, this was in direct proportion to how much they had previously pissed me off or disgusted me. I didn't care about myself, I only wanted them to succeed and find happiness.
Second courseMe going into it: That feeling of love and empathy was awesome. I'm going back so I can get more of that.
What happened instead: Some subdued feelings of empathy, followed by profound insights into the source of my unhappiness -- the constant, pointless striving and the fear that drives it. Followed by a feeling of euphoria: I've got three whole days left, if I'm already making this kind of progress I'm going to be the effing champ by day ten. Followed immediately by a total inability to focus or perform the technique at all or feel any empathy, leading to a very rapidly escalating spiral of rage and despair that I had put all this effort into this thing and IT WASN'T GIVING ME WHAT I WANTED. By day ten, with the help of the teachers, I had managed to calm myself down and accept that I had sabotaged myself.
Third courseMe going into it: I am going to try my best to not have any expectations, particularly of any benefit that will accrue to me. I am going to try my best to perform the technique with sincerity, dedication, and humility, and accept that I may get nothing at all out of it.
What happened instead: Hard to summarize. No epiphanies, no fireworks. Feeling a little happier, a little more comfortable in my own skin. Feeling a little more empathy for other people, not as a sudden revelation but as an almost mundane thing. Feeling a little more spontaneous, and unafraid of saying or doing the wrong thing. The old patterns are still there and my mind is still a cage, but it's no longer opaque and I've got some room to move around.
It looks like mindfulness, developed by Jon Kabat-ZinnWest, is some kind of western version of Vipassana. Do you have any experience/understanding how these two compare?
I'm not familiar with Jon Kabat-ZinnWest, beyond what I just Googled. It doesn't surprise me, though. I've heard of similar "mindfulness" techniques being used to help terminally ill patients cope. I also think the Borderlines use something similar as part of their therapy.
I also ran across a post on this forum that describes something similar:
http://www.psychforums.com/narcissistic-personality/topic51018.html#p368879It's the genuine curiosity, waiting for the answer to come, and paying attention to the feeling that reminds me of vipassana.
I won't knock anything that helps anyone, but I suspect vipassana is more effective, if for no other reason than the intensity and duration. But aside from that, it's an immersive experience carefully designed to impede feelings of entitlement and superiority.