One thing about meditation and withdrawal is the lack of stimulus. There’s nothing left to draw upon except yourself. This can be confronting.
It points to an important feature of the mind: it exists to process things.
“Everyone complains about work when they have lots of stuff to do. One thing I’ve realized is that work is at its worst when there’s NOTHING to do. I thought back to the 3 days Matt and Ramona were out a few weeks ago. Each day seemed longer and longer, because by Friday there was literally no work left to do.”
Busy Work Is Good Work