I vividly remember thinking how out of line she was. But as I thought more about what she said, I realised she’d done me a favour

• Read more in the kindness of strangers series

More than 30 years ago, I set out to build my dream house in a small rural town. It was a stressful process exacerbated by a demanding career that required me to travel across Asia and the Pacific for weeks at a time. The challenges of juggling parenting, marriage, my work and the house felt overwhelming at times. Not to mention the builders were falling behind schedule and often did not show up at all.

One day I found myself in a lighting shop, finally ready to buy light fittings. The woman who ran the shop was not exactly friendly but as it was the only shop of its kind around, she won my business by default. I asked her a few questions about some lights and received only one- or two-word answers. I made the purchase, and as I was about to leave, she looked me firmly in the eyes and said: “You know, no matter how hard you think you have it, there are always others who have it much worse than you.” With that, she turned and went into the back of the shop.