The idea that you should work smarter, not only harder isn’t anything new. When talking about the difference between smart and hard work it’s pretty simple to explain what working hard means. If you want to be successful in the long run, you have to put long hours into work. You have to start early, before all other people, and you have to stay up late, when everyone else is already enjoying their afternoons and evenings.
On the other hand, it’s really hard to find very clear guidelines on what working smart really means and how it’s different from hard work. It’s very obvious that even if you’re determined that nobody will outwork you, you still have maximum limits regarding working hours that you reach pretty fast; and there’s always someone who’s willing to sleep less than you. On top of that, many people work hard, but only a few become really successful. That’s because smart work is what makes the difference.