I actually don’t think it takes much to make most people happy. We want to live in a healthy environment, enjoy good physical health, have great relationships, have time for recreation and live in peace.
On the other hand, happiness often requires removal. Many of us could stand to scale back on our possessions, space, debt and activities. Most of us have found that the things we thought would make us happy actually stress us out and can make us miserable.
So “editing” means removing all that detracts from our happiness. This is not a passive act; as Blaise Pascal put it, “I would have written a shorter letter, but I did not have the time.” Editing takes effort.