The author has snippets of her book here. But, they're a bunch of funny stories throughout her life and how she's been dealing with depression. I've read it multiple times and I love the book.

Here's a quote from the website:

What kind of stories are in it?

Of the new stories, there are two new stories about my dogs, a story about a letter I wrote to my future self when I was ten, a story about the use of fear and shame as motivational tools, a story about the time my mother tried to take my sister and I on an adventure and ended up getting us all lost in the woods, a story about all the illogical internal rules I have for how reality should be and what happens when reality doesn't give a shit about my rules, a story about a toy parrot, a story about a lie I told as a child that spiraled completely out of control, a story about my identity and how I use it to prevent myself from realizing how shitty I actually am, and a cautionary tale about what happens when you try to fix everything about yourself all at once.

That's hyperphantasia. My brain too take me on weird adventures before sleep, but for me it can happen without any control over it like some sort of flashback. It doesn't last long, like a 2-3 seconds . When kid i always had this sort of hallucination that would happen randomly where i open a door very slowly and in the other side is some sort of library and in the center a huge hourglass spinning. All happening in slow motion.