Going for a walk is a good source for ideas and new thoughts. A quote I saw again today made me think more about some prior thoughts.
Soren Kerkegaard said: "Life can only be understood backwards; but it must be lived forwards."
In the Stories Section of his blog I wrote an article titled Reflections on Life . In that article I said:
"There is no one whose story I am as familiar with as my own. The same is true for you. This seems so obvious, but then what surprises me a little is how I see that story differently almost every time I tell it". It really is different when you look back."
Your conclusions change. You see through the filter of experience.