Further, very often we write code that isn't the code we need to write. I have wasted countless hours on needlessly efficient implementations of the wrong inter

Further, very often we write code that isn't the code we need to write. I have wasted countless hours on needlessly efficient implementations of the wrong interface, or, on the other end of the spectrum, coming up with the perfect interface for code that will never be used again. Because I like puzzles and optimizing is fun and wiring up business processes is not very fun at all. But that doesn't mean it's a good way to write software. Accept that most of what devs do is fairly mundane, and focus your mental effort where it's actually needed and you'll be a better developer than anyone who obsesses over the performance/elegance/extensibility of every line they write. Obviously it's a spectrum, and it takes balance, but I know which side I'm currently on!