While you can pick and choose pieces to read, I recommend that you read these in the order
presented here, as if you were reading a book. Where a section is referred to, go to that section and read the overview and decide if and when you'll return - as each are very worthwhile.
The end result of this part: A Happiness Plan, that includes what you will do to assure happiness in your life. A specific list of objectives that you buy into and what else you need to do to achieve them.
"Valued" minus Suffering = Net Happiness