Highlighting can make reading feel productive, but a page full of marked sentences does not automatically improve understanding. The value usually comes from what you do after the highlight.
Write what the idea means to you
After marking a useful passage, add one sentence in your own words. This forces you to process the idea instead of only recognising it.
Connect it to a real situation
Ask where the idea applies. It could relate to a decision, a conversation, a project or a habit. Context makes the note easier to remember later.
Choose one next action
For practical books, a useful note often ends with a small action. That might be testing a new routine, discussing an idea with someone or reviewing a decision from a different angle.
Reading becomes more valuable when the goal is not to collect quotes but to build understanding that can be used.
