Positive thinking had been perceived incorrectly a lot of times. The faith surrounding the idea of thinking positive is somehow failing. Unfortunately, everyone had begun to adopt the habit of optimism to ignore the reality of their life. Excessive positive thinking is putting the optimum in a box.
Books go into so much detail about whole other worlds. So, in your brain, you would have that kind of space for people, places, connections, histories, and stories that are just as real as you have lived those experiences by yourself.