I started what I call "The book of books" to help me digest concepts or other information to better grasp and understand a book. I underline the important notes like stepping stones and rewrite those sections into the book of books. Writing it down drastically helps me remember those points in the future. 

Rule of Power 30 from Robert Greene " Make your Accomplishments seem effortless". The people who truly do succeed in building a successful life pursue a path were any unproductive pain is avoided if not all pain.