03/09/2026
The “I’ve blown it” trap
Have you ever eaten something you hadn’t planned to and immediately thought:
“Well, I’ve blown it now. I might as well carry on.”
There’s actually some psychology behind this.
It’s sometimes called the “what-the-hell effect” – that tendency for one slip to turn into much more because we feel we’ve already failed.
It’s also a classic example of all-or-nothing thinking, or what I sometimes call the “diet mentality”: I’m either doing this perfectly, or I’m not doing it at all.
When we have very rigid rules around food, breaking one of those rules can make us feel as though we’ve failed completely. And once we think we’ve failed, it becomes much easier to think, “I might as well have another...”
So one slice of cake can become an afternoon of eating, a takeaway that evening, or even a whole weekend of “I’ll start again on Monday”.
The interesting thing is that beating yourself up about it doesn’t necessarily help you make a better choice next time. Research around self-compassion and eating behaviour suggests that responding with less self-criticism after a slip may actually help us get back to our usual habits more easily.
And this is something I often talk about with my clients.
If you eat something you hadn’t intended to, don’t turn it into something bigger than it is.
You haven’t “blown it”.
You ate the cake (sorry cake, just using you as the example!)
Draw a line under it and go straight back to the way you normally eat at your next meal.
No punishment. No trying to compensate for it. And no waiting until Monday to start again.
Because this isn’t about being “on a diet”. It’s about changing the way you eat and building habits that support your health and your eyes for the rest of your life.
And real life doesn’t always go to plan.
Part of consistency is learning how to deal with those times, draw a line under them and carry on.
Do you recognise this in yourself? Have you ever fallen into the “I’ve blown it, so I might as well carry on” trap? I definitely have!