Let's face it, most of us have done it at some time.

Prepared a 'healthy' tea for that evening.

Told ourselves that we're going to be good all week.

But then we get to the end of the week, feel that because we've been good all week we deserve a treat.

The healthy prepared tea gets pushed to one side and instead we 'celebrate' by ordering in the take away or calling to the supermarket for the sugary treats.

Then what happens is that we immediately regret it and shame ourselves about why we keep sabotaging our weight loss efforts.

It feels as if something takes over and before we know it we've overeaten and done the very thing that we've told ourselves over and over that we're not going to do this time.

The reason that we do this is because our eating habits and behaviours are stored in the subconscious part of our mind.

The part that does things automatically based on what we've always done in the past.

Especially when emotions are involved such as eating when we're angry, bored, lonely or upset.

Or even when we feel we deserve to celebrate, such as in the example above.

And I think that's what makes it so difficult because rationally we know exactly what we need to do to lose weight or to keep weight off.

But it's not that part of our brain that's in charge.

Not always, but usually, this starts in childhood.

From a very young age, it is subconsciously suggested to us that we can use food to respond to or even stifle our emotions:

"If you're good whilst we're in the supermarket, I'll buy you some sweets"

"That school report was brilliant what treat would you like?"

"Here's a biscuit, stop crying"

"What cake would you like for your party?"

"I know you're angry, one of those nice biscuits will make you feel better"

"If you're bored why not make yourself a snack"

"Eat all of your dinner before you leave the table"

"No pudding unless you eat everything up first"

If we were rewarded or persuaded with food as a child there's a good chance that we will have carried this habit into adulthood.

This can result in habits such as being unable to scrape leftover food in the bin and instead finish it all off even though we feel full.

Or portion control, we eat more now simply because we can.  We're the adult and we'll choose how much we eat.

Or it can lead to hiding food.

If, as a child, we hid food we might find ourselves still doing this today.

When we stop to think about it, most of our lives revolve around food.

From a very young age, food is at the centre of just about anything from birthday celebrations to bribery.

And here's the key part, if in the past we've responded to whether we feel happy, sad, excited, proud, angry, bored or lonely by eating and it's made us feel better, even for just a short while, this is recorded in our brain as a helpful solution (even if it doesn't feel like it to us now!).

We've had a productive day so we reward ourselves with a 'treat'.

We have an argument with that annoying work colleague so come home and stuff down the ice cream.

That period of time between finishing tea and going to bed.  Sitting down on the sofa to watch TV and before we know it we've finished off most of a packet of biscuits.

And that's why we feel powerless to stop it, because it's something that is now stored in our unconscious minds and we do this behaviour without even realising.

But believe me, we truly can change this.