Pick a topic (like economics). Pick out 3 contrasting books which give alternative view points on said topic. Read them and takes notes. At the end compare and

Pick a topic (like economics). Pick out 3 contrasting books which give alternative view points on said topic. Read them and takes notes. At the end compare and contrast your notes from all 3 and write your own condensed version of notes from your new perspective. Try make sure the books are really contrasting, i.e. pick work from Ayn Rand, Thomas Piketty & Lee Kuan Yew. It's literally impossible to agree with all three on all topics so you will be forced to analyse why you do or don't agree with the contents of the book.