Welcome to a conceptual time machine! There are hundreds of posts and newsletters in the Archives of my brain (aka this site). While you’re very welcome to dig through and see what you stumble upon, you might want to check out my books instead. They’re curated ;)
For articles:
Article archives
Freshly Brewed Thoughts
My newsletters aren’t searchable (yet, but maybe MailPoet makes that a feature), so I’d suggest choosing a week that meant something to you and see what was rattling around in my brain at that time.