Close the deal. That's what I meant.

'Wait!' I hear myself say. 'Just … wait a moment! I have a few points to make.'

What am I talking about? I have no points to make.

There's a can of Panther Prime sitting on the desk, and I grab it for inspiration. Playing for time, I stand up, walk to the centre of the room and raise the can high into the air where we can all see it.

'Panther Prime is … a sports drink.'

I stop, and there's a polite silence. My face is prickling.

'It … um … it is very …'

Oh God. What am I doing?

Come on, Emma. Think. Think Panther Prime … think Panther Cola … think … think …

Yes! Of course!

OK, start again.

'Since the launch of Panther Cola in the late 1980s, Panther drinks have been a byword for energy, excitement and excellence,' I say fluently.

Thank God. This is the standard marketing blurb for Panther Cola. I've typed it out so many zillions of times, I could recite it in my sleep.

'Panther drinks are a marketing phenomenon,' I continue. 'The Panther character is one of the most widely recognized in the world, while the classic slogan "Don't Pause" has made it into dictionaries. We are now offering Glen Oil an exclusive opportunity to join with this premium, world-famous brand.'

My confidence growing, I start to stride around the room, gesturing with the can.

'By buying a Panther health drink, the consumer is signalling that he will settle for nothing but the best.' I hit the can sharply with my other hand. 'He expects the best from his energy drink, he expects the best from his petrol, he expects the best from himself.'

I'm flying! I'm fantastic! If Paul could see me now, he'd give me a promotion on the spot!

I come over to the desk and look Doug Hamilton right in the eye. 'When the Panther consumer opens that can, he is making a choice which tells the world who he is. I'm asking Glen Oil to make the same choice.'

As I finish speaking I plant the can firmly in the middle of the desk, reach for the ring pull and, with a cool smile, snap it back.

It's like a volcano erupting.

Fizzy cranberry-flavoured drink explodes in a whoosh out of the can, landing on the desk, drenching the papers and blotters in lurid red liquid … and oh no, please no … spattering all over Doug Hamilton's shirt.

'Fuck!' I gasp. 'I mean, I'm really sorry …'

'Jesus Christ,' says Doug Hamilton irritably, standing up and getting a handkerchief out of his pocket. 'Does this stuff stain?'

'Er …' I grab the can helplessly. 'I don't know.'

'I'll get a cloth,' says the other guy, and leaps to his feet.

The door closes behind him and there's silence, apart from the sound of cranberry drink dripping slowly onto the floor.

I stare at Doug Hamilton, my face hot and blood throbbing through my ears.

'Please …' I say, and clear my husky throat. 'Don't tell my boss.'

After all that. I screwed it up.

As I drag my heels across the concourse at Glasgow Airport, I feel completely dejected. Doug Hamilton was quite sweet in the end. He said he was sure the stain would come out, and promised he wouldn't tell Paul what happened. But he didn't change his mind about the deal.

My first big meeting. My first big chance — and this is what happens. I feel like giving up on the whole thing. I feel like phoning the office and saying 'That's it, I'm never coming back again, and by the way, it was me who jammed the photocopier that time.'

But I can't. This is my third career in four years. It has to work. For my own self-worth. For my own self-esteem. And also because I owe my dad four thousand quid.

'So what can I get you?' says an Australian guy, and I look up dazedly. I've arrived at the airport with an hour to go, and have headed straight for the bar.

'Erm …' My mind is blank. 'Er … white wine. No, actually, a vodka and tonic. Thanks.'

As he moves away, I slump down again in my stool. An air hostess with a French plait comes and sits down, two bar stools away. She smiles at me, and I smile weakly in return.

I don't know how other people manage their careers, I really don't. Like my oldest friend Lissy. She's always known she wanted to be a lawyer — and now, ta-daah! She's a fraud barrister. But I left college with absolutely no clue. My first job was in estate agency, and I only went into it because I've always quite liked looking round houses, plus I met this woman with amazing red lacquered nails at a career fair who told me she made so much money, she'd be able to retire when she was forty.

But the minute I started, I hated it. I hated all the other trainee estate agents. I hated saying things like 'a lovely aspect'. And I hated the way if someone said they could afford £300,000 we were supposed to give them details of houses costing at least £400,000, and then kind of look down our noses, like, 'You only have £300,000? God, you complete loser.'