Some pages are easier to turn over and some take a while and irk you in a very bizarre manner that you won’t even remember in long term. Same is with life.
Some chapters of your story go smooth but a few get you stuck in the center leaving you traumatised. A single page can give you a paper cut and scar you for life. If you turn to run away from it without leaving a mark, you get lost the next time you decide to start from where you left off. Some books have a tragic ending that make you cry and a few have a happy ending that too make you cry. The difference is in the emotions these pages like memories hold. It is always better to go through the review of a book before jumping deep into the core of these chapters with no way out. It is always better to plan before you take a new step in life.