Winning is the worst thing that can happen in Vegas by David of 37signals
The road to programming hell is paved with “best practices” applied too early. Very few abstractions, extractions, or architectures are inherently bad (although I’ll contend that a few are). But most of them are downright evil if applied before they’re called for.
To take the scare quotes of flexibility, you have to be willing to write no code at all. The “Simplest Thing That Could Possibly Work” and “You’re Just Not Going To Need It” are both sayings to help you get there.