Someone started by saying that they are not an expert. Well I am an expert. How does someone become an expert-- by learning. Meditation is a broad term just like exercise. One thing in common is isolation. They researched isolation many years ago and found some interesting things.
They found the reactions to it vary greatly. It came sown to this. Somebody like Eckhart Tolle who is happy and has plenty of self-love can have lots of isolation with no problem. But at the other end people who have lots of problems with the above can have terrible things happen with a little bit of isolation.
Now if you were doing something like TM, you would have experts watching over you and instructing you, even though the leader died 2 years ago
. Also since you pay money to learn it, you could sue them if something negative happens for $10 million dollars.
You apparently could have had many problems before this. Maybe this webpage about psychology and meditation
has something to help you.
These periods of isolation were many, many hours not anywhere near the 20 minutes that they do in TM. Also if someone is not sure if they are psychotic (sociopath), then that is absolute proof that they are not. A sociopath cannot entertain such an idea. Someone with no emotion cannot be afraid that maybe they do not have any emotions. Please note that I never have done TM. I used them as an example of having expert guidance. However I did read some books about TM including Mahesh Yogi's 500 page book about it. Note that they have a university (college) now.
It is the only meditation where they teach you how to fly without any aid (advanced course).