I read this book 35 years ago, and could not remember much of it, so when I saw a GoodReads friend was rereading it, I decided to reread it too, and compare our reviews when done.

George Orr, a draughtsman in Portland, Oregon, has disturbing dreams which he believes change reality. In an effort to stop dreaming he takes drugs, which get him into trouble with the police. Have psychiatric treatment or go to jail is the choice he is offered. The psychiatrist, Dr Brian Haber, after ascertaining that George Orr is not deluded, and his dreams really do change reality, tries to use them to change the world and improve it by suggesting to George Orr what he should dream about.

Instead of being freed from his dreams, George Orr finds that he is being manipulated by Dr Haber, and with each dream, and each change of the world and its history that comes about, Dr Haber becomes more powerful and influential, until Portland becomes the capital of the world, with Brian Haber controlling much of it from his office. With each change of the world, Haber claims the credit for any improvements, but blames Orr for any defects, saying that Orr had failed to carry out his instructions in hypnotic suggestions before dreaming.

In each changed state, some people who were alive in one of the former states end up dead, or it is as if they had never been born. Only Orr. Haber, and a lawyer Orr consults (and falls in love with) realise what is happening. But their relationship is not smooth. A lunch appointment made in one world is broken in the next, as the restaurant is no longer there.

Though it is a short book, only 156 pages in the edition I read, I found it rather slow-paced in places, and thought that perhaps it would have been better as a short story. I would have given it three stars, and probably would have taken a lot longer reading it, a chapter a day at bedtime, but for some strange incidents that made me feel as though I were in a similar story, and that it wasn't just happening in a book. But that has to do with the reader rather than the book, so I tell that story in my blog here: The Lathe of Heaven and the Mandela Effect.