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Self-sabotage when losing weight: why you work against yourself

November 13, 2026Fajah Lourens

Self-sabotage when losing weight is usually not a lack of willpower, but an old protective pattern: when things go well it feels unfamiliar, and your brain falls back on what it knows. Suddenly you finish the whole bag, skip your workout or stop just before reaching your goal. That's not a character flaw. It's a pattern, and a pattern can be broken.

I'm Fajah. In all my years with Killerbody I've seen this in so many women and, honestly, in myself too. You do everything right, the scale moves, and that's exactly when something goes wrong. Let's look at what's really happening.

What is self-sabotage when losing weight?

Self-sabotage is behaviour that unconsciously works against you while you consciously want something else. You want to lose weight, but you act as if you don't want that at all. These are often automatic reactions that once helped you, for example as a child or during a stressful period.

How do you recognise self-sabotage?

  • You have a good week and then "reward" yourself with a binge.
  • One slip-up and you think: it's already ruined now.
  • You keep starting over, but almost always stop around the same point.
  • You make excuses (no time, too busy, next month) as soon as it gets exciting.
  • You get compliments and feel uncomfortable about them.

Why do you work against yourself?

Because one misstep feels like total failure

Research on dieting shows that people who are strict with themselves often end up eating even more after a single slip. Psychologists call this the what-the-hell effect (Polivy & Herman, 1985). The problem then isn't that one bite, but the thought behind it.

Because success is unknown territory

Your brain loves predictability. Even if your old situation wasn't pleasant, you knew it. A changing body, attention from others and new expectations can unconsciously create tension.

Because food has been given another job

If food gives you comfort, distraction or calm, losing weight also takes away a way of dealing with feelings. Also read my blog about how to stop emotional eating.

What can you do about self-sabotage?

  1. Name it without judgement. Tell yourself: there's my pattern again. Naming it takes away its power.
  2. Find your tipping point. Write down three moments when it went wrong. What happened just before? Which thought? Which feeling?
  3. Replace all-or-nothing with the next choice. One bad meal is not a bad week. Your next choice counts again. You can read more about this in breaking patterns instead of just adjusting.
  4. Make an if-then plan. If I come home and head straight for the cupboard, then I first pour a glass of water and walk outside for five minutes.
  5. Make sure your body cooperates. Cravings and blood sugar dips make sabotage easier. A protein-rich, filling meal helps, for example a Meal Shake as an easy base on busy days.

Want the bigger picture? In my weight loss coach guide you can read how losing weight with guidance works, and why 7 patterns often hold you back.

When is a coach a smart choice?

If you keep seeing this pattern come back and can't break it on your own, support isn't a weakness but a smart choice. In my 6-month 1-on-1 programme we work on the cause, not just on the eating. Want to know if it suits you? Leave your details via 1-on-1 coaching and Fleur will call you for a no-obligation conversation.

Frequently asked questions about self-sabotage when losing weight

Is self-sabotage normal when losing weight?

Yes, it's very common. Many people unconsciously hold on to old behaviour, especially when things are going well. It doesn't mean you're weak.

How do you stop sabotaging yourself?

By recognising the pattern, finding your tipping point and having small, concrete alternatives ready. Being strict usually backfires; being kind and consistent works better.

Why do I fall back into old behaviour after a good week?

Often because of all-or-nothing thinking and because success feels unfamiliar. After a good week, plan a calm, predictable follow-up instead of rewarding yourself with food.

When should I seek help?

Do you regularly have binges, often feel guilty or low, or can't regain control on your own? Then talk to your GP or a psychologist. A coach can also help with behaviour and daily habits.

Sources

  • Polivy, J., & Herman, C. P. (1985). Dieting and binging: a causal analysis. American Psychologist, 40(2), 193-201.
  • Lally, P., et al. (2010). How are habits formed: modelling habit formation in the real world. European Journal of Social Psychology, 40(6), 998-1009.

About Fajah Lourens
Fajah is the founder of Killerbody (since 2015), the author of books of which more than 350,000 copies have been sold in total, and an NLP practitioner.

So I'm going to help you.

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