Week's Discovery #2
Three Good Things
How one simple evening habit can make your brain notice more of what is already going well.
Every week, The Happiness Lab explores one science-backed idea that can make everyday life a little happier. Read it. Try it. Experience it.
πWhy do good days disappear so quickly?
Have you ever noticed how easily our minds replay the difficult moments of the day? A delayed train. A misunderstanding. An unexpected problem.
Even when many good things happened, our attention often returns to the one thing that went wrong. Psychologists call this the negativity bias.
From an evolutionary perspective, paying attention to danger helped our ancestors survive. But in modern life, this natural tendency can make us overlook many of the positive experiences that quietly fill our days.
Fortunately, research suggests that this habit of attention can be gently retrained. One of the simplest and most influential exercises ever developed in positive psychology is called Three Good Things, created by Professor Martin Seligman and his colleagues at the University of Pennsylvania.
π¬What does the research say?
In one of the most well-known studies in positive psychology, participants were asked to spend about ten minutes each evening for one week writing down:
- Three things that went well that day
- Why each good thing happened
This second question is surprisingly important. Rather than treating positive moments as random accidents, participants were encouraged to reflect on the causes behind them.
Perhaps a pleasant conversation happened because they decided to call a friend. Perhaps they felt calmer because they took a walk during lunch. Perhaps they received appreciation because they had shown kindness first.
By identifying the reasons behind positive events, people begin to recognize their own role in creating well-being.
The results were remarkable. Participants reported increased happiness and reduced depressive symptoms, with benefits that lasted well beyond the end of the exercise for many participants. The exercise has since become one of the most widely recommended practices in evidence-based positive psychology.
π±What does this mean in everyday life?
Many of us wait for happiness to arrive through extraordinary events. A promotion. A holiday. A major achievement.
But the Three Good Things exercise invites us to look in the opposite direction. It suggests that happiness often grows from ordinary moments that we simply fail to notice.
A delicious cup of coffee. A smile from a neighbour. A message from a friend. Finishing a task you had been postponing.
When we pause to ask: "Why did this good thing happen?" we begin to notice something important. Many positive experiences are not accidents. They are connected to our choices, our relationships and our daily habits.
Instead of asking only "What went wrong today?", we also begin asking: "What went well⦠and how can I create more of it?"


