The best book is the one you will absolutely devour. A love for reading is critical and should be cultivated at all costs. So read any book— romance novel, young adult literature, textbook — that gets you reading more.
I often start and discard books quickly. For a long time, I thought this was bad. My flawed solution: stop reading books altogether. How short-sighted.
Now I see it simply as an issue of match fit. When you read the right thing at the right time, you’ll read the whole thing. To get there, sampling may be better than forcing yourself to read every page of something that will just diminish your love of reading. The best book is the one you read.