After analysing nearly 12,000 daily work diaries from 238 employees, Harvard researchers found that the strongest driver of a good inner work life wasn’t praise, pressure or incentives — it was making progress on meaningful work, even in small steps. They called it the progress principle.

Imagine handing nearly 12,000 end-of-day diary entries to a research team and asking them one question: on the days people felt good at work, what had actually happened? You might guess a raise, a compliment from the boss, a deadline that lit a fire under everyone. The answer that came back was quieter than any of those.

The diaries came from 238 employees across seven companies, sending a confidential entry at the end of each workday for the length of a project. Harvard Business School professor Teresa Amabile and her co-author Steven Kramer combed the lot. What they found is that on people’s best days, the standout event was usually small and unglamorous: they had moved a meaningful piece of work forward, even slightly. They named it the progress principle.

I should say up front that I’m a writer, not a psychologist, and this is one research program rather than settled law. What follows is my reading of their study and how it lines up with my own working life, not advice about how to run yours.

The surprise of the study is how ordinary the winning event was. As Amabile and Kramer put it, “of all events that occur at work, the event having the most prominent positive effect on emotions, perceptions, and motivation is simply making progress in meaningful work.” The standout event wasn’t a bonus or applause; it was progress.

 The flip side mattered too. It was noted that “small wins can boost inner work life tremendously”, while small losses could land with an outsized negative weight. The asymmetry matters: a small step forward lifts you slightly, while a small step back can drag you down out of proportion. It’s a clue about why some busy days leave you flat and others leave you light.

Perhaps the most useful frame I’ve taken from the study is that motivation is less a fuel you top up and more a feedback loop you keep running. Progress feeds inner work life, and a good inner work life makes the next bit of progress more likely. Amabile and Kramer described a positive loop between the two, and noted that the management moves which keep it turning “may sound like Management 101, but it takes discipline to establish new habits.”

What counts as progress, then? This is where the bar gets low by design. Amabile and Kramer argue that “the work doesn’t need to involve curing cancer in order to be meaningful. It simply must matter to the person doing it.” A bug you finally close, or a paragraph that lands, or a hard email sent — if it matters to you and it moved, it counts.

So how do you protect a progress moment? The simplest reading is to notice progress more honestly than we tend to. We’re quick to register the long task list and slow to register the small thing we genuinely advanced. 

Ask yourself, did anything that matters to me actually move today, or did I just stay in motion? Motion and progress can feel almost identical in the moment, and completely different by evening.

If work has tipped past the ordinary flat day into something heavier, where most days feel empty no matter what you do, that’s worth talking through with a qualified counsellor or therapist rather than reading your way out of it.