Here is the deal. They work in a lagom way. It is often for employees to ask their bosses or managers how much time they want them to spend on a task or project. Only to get an answer like “lagom“. Or “until it is done”. Not too little so that work is not done, but not too much either so that everybody gets a burnout. Good enough for the circumstances. If you get your work done earlier, you can leave. Totally OK!
This must be the foundation of the Nordic work-life balance, that everybody outside Scandinavia dreams of. Maybe, it is all about standards and expectations? And looking at the big picture? You must work hard but in a meaningful way to get the work done, just good enough for what it is expected. Work too much and you get unhappy. Then work becomes a burden and productivity drops.
Work less but more focused and to the point. Set realistic expectations and goals. Remind yourself that working hard is good but working too hard is bad in the long-run.