Let me first admit: I am a recovering long-hour champion.
For nearly 3 decades, if you asked me how many hours I work, I would just say "All of them." I wore it as a badge of honor. For almost 20 years it never occurred to me that you could drive to or from work in daylight. For my first three years of my startup career I didn't see my family or celebrate Christmas.
Now let me admit what a colossal flipping waste of energy that was.
Yes, I created great startups and had some success. Yes, a lot of that "hard work" was necessary. But now, with the benefit of history and having watched thousands of startups go from zero to something, I've come to learn something:
Those long hours were a symptom of inefficiency, not a default badge of honor ...