Well, I don't particularly have a very methodical thought process around this. If a book feels like a repetitive tirade or the author is just selling a pot-boiler then I abandon it.
Now, I've started to screen books even more strictly before buying them or investing time in them. I am even more skeptical about books that are continuously over-hyped by everyone. Feels more like everyone is reading it just for validation from others that they are now "cool" since they've read this famous book.
As you said, life is short, there are so many books to read and limited time on my hands. So, now no matter how hyped a book is, I try to judge whether the author is selling a pot-boiler or someone who was seriously dedicated in sharing their knowledge with the world.
Every dude-bro is writing a self-help book or how to be productive all the time. Such books are just garbage and not worth anyone's time. All those New York Times Bestseller titles mean nothing.
If I am reading a book on productivity and time management, then it better be written by someone with skin-in-the-game. Either a serious academic researcher on time management and productivity or someone like Cal Newport who is serious about this subject and follows what he preaches in his personal life.