This is the part that is so hard for so many authors. Leaving out the bits that seem so important and critical to the story in the author’s mind but, in actuality, stand to bore their readers to death.
Uses an example from Alexandre Dumas’s Twenty Years After to explain how, when, and why to skip the boring parts that could potentially bore your readers.
Source: How to Spot and Leave Out the Parts That Bore Readers – Helping Writers Become Authors