The Dip: A Little Book That Teaches You When to Quit (and When to Stick)

Seth Godin's short argument that every worthwhile project has a painful middle — the Dip — and that quitting the wrong things to push through the right dip is the actual skill of success.

Armstrong credits this tiny book with a life decision: 'made me move to Silicon Valley and double down on being a tech entrepreneur.' The lesson — the dip separates winners from everyone else — is founder doctrine.