'Are you all right, Mum?' I said, thinking about Dad arriving at Una's party with asbestos-widow Penny Husbands-Bosworth.

'Darling, you are sweet. I'm under such terrible pressure.'

'Is there anything I can do?'

'Actually, there is something,' she said, brightening. 'Do any of your friends have a number for Lisa Leeson? You know, Nick Leeson's wife? I've been desperate to get her for days. She'd be perfect for 'Suddenly Single.''

'I was talking about Dad, not 'Suddenly Single,'' I hissed.

'Daddy? I'm not under pressure from Daddy. Don't be silly, darling.'

'But the party . . . and Mrs. Husbands-Bosworth.'

'Oh, I know, hilarious. Made a complete silly fool of himself trying to attract my attention. What did she think she looked like, a hamster or something? Anyway, must run, I'm frighteningly busy but will you think who might have a number for Lisa? Let me give you my direct line, darling. And let's have no more of this silly whining.'

'Oh, but Mum, I have to work with Daniel, I – '

'Darling – wrong way round. He has to work with you. Give him hell, baby.' (Oh God, I don't know who she's been mixing with.) 'I've been thinking, anyway. It's high time you got out of that silly dead-end job where no one appreciates

you. Prepare to hand in your notice, kid. Yes, darling I'm going to get you a job in television.'

Am just off to work looking like Ivana bloody Trump wearing a suit and lip gloss.

Wednesday 2 August

8st 12., thigh circumference 18 inches, alcohol units 3 (but v. pure sort of wine), cigarettes 7 (but did not inhale), calories 1500 (excellent), teas 0, coffees 3 (but made with real coffee beans therefore less cellulite-inducing), total caffeine units 4.

Everything's fine. Am going to get down to 8st 7lb again and free thighs entirely of cellulite. Certain everything will be all right then. Have embarked on intensive detoxification program involving no tea no coffee no alcohol no white flour no milk and what was it? Oh well. No fish, maybe. What you have to do is dry-skin brushing for five minutes every morning, then a fifteen-minute bath with anticellulite essential oils in it, during which one kneads one's cellulite as one would dough, followed by massaging more anticellulite oil into the cellulite.

This last bit puzzles me – does the anticellulite oil actually soak into the cellulite through the skin? In which case, if you put self-tanning lotion on does that mean you get suntanned cellulite inside? Or suntanned blood? Or a suntanned lymphatic drainage system? Urgh. Anyway. . . (Cigarettes. That was the other thing. No cigarettes. Oh well. Too late now. I'll do that tomorrow.)

Thursday 3 August

8st 11, thigh circumference 18 inches (honestly, what is bloody point), alcohol units 0, cigarettes 25 (excellent, considering), negative thoughts: approx. 445 per hour, positive thoughts 0.

Head state v. bad again. Cannot bear thought of Daniel with someone else. Mind is full of horrid fantasies about them doing things together. The plans to lose weight and change personality kept me aloft for two days, only to collapse around my ears. I realize it was only a complicated form of denial. Was believing could totally reinvent self in space of small number of days, thereby negating impact of Daniel's hurtful and humiliating infidelity, since it had happened to me in a previous incarnation and would never have happened to my new improved self. Unfortunately, I now realize the whole point of the aloof over-made-up ice-queen on anticellulite diet palaver was to make Daniel realize the error of his ways. Tom did warn me of this and said 90 percent of plastic surgery was done on women whose husbands had run off with a younger woman. I said the rooftop giantess was not so much younger as taller but Tom said that wasn't the point. Humph.

Daniel kept sending me computer messages at work. 'We should talk,' etc., which I studiously ignored. But the more he sent the more I got carried away, imagining that the self-reinvention was working, that he realized he had made a terrible, terrible mistake, had only now understood how much he truly loved me, and that the rooftop giantess was history.

Tonight he caught up with me outside the office as I was leaving. 'Darling, please, we really need to talk.'

Like a fool I went for a drink with him to the American Bar at the Savoy, let him soften me up with champagne and 'I feel so terrible I really miss you blar blar blar.' Then the very second he got me to admit, 'Oh, Daniel, I miss you too,' he suddenly went all patronizing and businesslike and said, 'The thing is, Suki and I . . . '

Suki? Pukey, more like,' I said, thinking he was about to say, 'are brother and sister,' 'cousins,' 'bitter enemies,' or 'history.' Instead he looked rather cross.

'Oh, I can't explain,' he said huffily. 'It's very special.' I stared at him, astonished at the audacity of his volte-face.

'I'm sorry, love,' he said, taking out his credit card and starting to lean back to get the attention of the waiter, 'but we're getting married.'

Friday 4 August

Thigh circumference 18 inches, negative thoughts 600 per minute, panic attacks 4, crying attacks 12 (but both times only in toilets and remembered to take mascara), Instants 7.

Office. Third-floor toilets. This is just . . . just . . . intolerable. What on earth possessed me to think it was a good idea to have an affair with my boss? Cannot deal with it out there. Daniel has announced his engagement to the giantess. Sales reps who I didn't think even knew about our affair keep ringing up to congratulate me and I have to explain that actually he has got engaged to someone else. I keep remembering how romantic it was when we started and it was all secret computer messages and trysts in the lift. I heard Daniel on the phone arranging to meet Pukey tonight and he said in a topsy-bunny voice, 'Not too bad . . . so far,' and I knew he was talking about my reaction, as if I were an emotionally unbalanced ex-wife or something. Am seriously considering face-lift.

Tuesday 8 August

9st, alcohol units 7 (har har), cigarettes 29 (tee hee), calories 5 million, negative thoughts 0, thoughts, general 0.