Hello,
I'm a newbie and hope that I have come to the right place to receive guidance in concentration practices.
My only claim as a contemplative is that I have followed two ten-day Goenka Vipassana courses.
The second course was in 2003, and was almost purely a painful experience. Everything hurt all the time. But there was a certain beauty in accepting the pain.
The first course I did was in 1995, and that is when I had some of the experiences you speak of here. Of course I did not experience anything as solid as the people who have already posted here. Still, it was powerful enough to frighten me - or rather, I was theoretically frightened that it did not frighten me, and I ended up purposefully thinking unconstructive thoughts in order to break from my meditation. Because every time I sat down I would feel the energy moving up and down and I would automatically start meditating.
What I experienced was a radical shift in identity.
Before the course I had been lazy and would have to struggle with myself to do anything. But after the course I would get up early without a struggle, I would not need coffee, and I would work all the time without getting tired, and take breaks just at the right time and neither too long nor too short to regenerate and be effective.
I was at university at the time, and writing essays was a breeze because I would spontaneously open books in the right places and I would set about writing the essay without having to think or mentally struggle.
Also, I no longer had conflicts with anyone. When someone who usually annoyed me would come into my presence I would automatically do some things with my body language that made them relax, feel good and never get to the point of saying or doing anything that would previously annoy me.
Furthermore, time slowed down. When I spoke with someone, I was fully aware both of their words and the space between their words, and I could finish their sentences if I wanted to. A kind of mind-reading, but not really: it was simply that I was aware of far more things in the same time period.
I also had direct mystical experiences. For example, once I was talking with someone who had suffered a scizophrenic episode. We were walking in empty streets at night. Something made me look behind us, and I saw as clear as anything else the entity that was possessing him.
Whenever I would sit down to meditate I would feel a creature of light above me feeding me with light.
In short, I had no idea what was going on, and the meditation retreat had not prepared me for my experiences. I had become extremely effective, and I didn't recognise myself. So I forcibly extracted myself from my meditation practice.
I feel that now that so many years have passed I am more ready to accept changes in identity. So I have started a meditation practice again. However, there is strong resistance within me, and when I want to meditate other things seem to come up.
I have recently started investigating kasina practice. I tried meditating on a candle flame a few times. The effect I have felt is one of happiness and having a high level of energy and satisfaction the following day. In an effort to find the perfect kasina, I have also tried meditating on water filling a bowl of neutral colour to the brim. Here I got into a state of observing sea creatures swimming in darkness, and my dreams were quite animated afterwards.
I'm a newbie and I would be happy to receive any advice whatsoever.
I would also like to ask, more specifically, if anyone has some input about kasina practice, and perhaps the pros and cons of the specific kasinas.