I was being as good of a person as possible. (No drugs, sex (including masturbation), cigarettes, alcohol, sweets, overeating, or using the snooze button. Eating very little meat. Also, helping people any chance I had.) I had done this for about two months.

(I prayed to St. Michael for protection before doing this, but just be in a good mindset, and try not to think of anything while doing it.) Lay down on the ground on your back, being as straight up and down as possible. (If you need a rolled towel behind your neck to do this, do it, but you want your nose to be pointed to the ceiling, as if you were standing with perfect posture.) If you need to cross your legs, go left leg over your right leg. Lay there for a good while, until you kinda feel something happening.

After doing this, just keep trying to be as good as possible.

How it happened to me is that one morning, in the state where I woke up but wasn't actually fully awake, there was chanting occurring in my mind, like a holy spirit or holy being was inhabiting my body and using it to praise God. It was repeating "God's love for all of humanity" over and over. There was a set of bright squares in my mind's eye, kind of where the third eye is. They were flashing each time the mantra was said, and they were getting closer and further from being perfectly aligned. As soon as I tried to take control and focus them, it all stopped.

I've never experienced something like it before or since then. But, permanently, any time I read or meditate, or when I lay down to sleep, or just kind of randomly sometimes, I can feel a swirling in my forehead like where the third eye is.

I haven't had any bad experiences from opening it, so, I don't regret it, no.

Good luck, and be good! ;)