‘Regrets ignore chronology. They float around. The sequence of these lists changes all the time.’

‘Right, yes, that makes sense, I suppose.’

She quickly realised they ranged from the minor and quotidian (‘I regret not doing any exercise today’) to the substantial (‘I regret not telling my father I loved him before he died’).

There were continual, background regrets, which repeated on multiple pages. ‘I regret not staying in The Labyrinths, because I let down my brother.’ ‘I regret not staying in The Labyrinths, because I let down myself.’ ‘I regret not doing more for the environment.’ ‘I regret the time I spent on social media.’ ‘I regret not going to Australia with Izzy.’ ‘I regret not having more fun when I was younger.’ ‘I regret all those arguments with Dad.’ ‘I regret not working with animals.’ ‘I regret not doing Geology at University instead of Philosophy.’ ‘I regret not learning how to be a happier person.’ ‘I regret feeling so much guilt.’ ‘I regret not sticking at Spanish.’ ‘I regret not choosing science subjects in my A-levels.’ ‘I regret not becoming a glaciologist.’ ‘I regret not getting married.’ ‘I regret not applying to do a Master’s degree in Philosophy at Cambridge.’ ‘I regret not keeping healthy.’ ‘I regret moving to London.’ ‘I regret not going to Paris to teach English.’ ‘I regret not finishing the novel I started at university.’ ‘I regret moving out of London.’ ‘I regret having a job with no prospects.’ ‘I regret not being a better sister.’ ‘I regret not having a gap year after university.’ ‘I regret disappointing my father.’ ‘I regret that I teach piano more than I play it.’ ‘I regret my financial mismanagement.’ ‘I regret not living in the countryside.’

Some regrets were a little fainter than others. One regret shifted from practically invisible to bold and back again, as if it was flashing on and off, right there as she looked at it. The regret was ‘I regret not yet having children.’

‘That is a regret that sometimes is and sometimes isn’t,’ explained Mrs Elm, again somehow reading her mind. ‘There are a few of those.’

From the age of 34 onwards, in the longest chapter at the end of the book, there were a lot of Dan-specific regrets. These were quite strong and bold, and played in her head like an ongoing fortissimo chord in a Haydn concerto.

‘I regret being cruel to Dan.’ ‘I regret breaking up with Dan.’ ‘I regret not living in a country pub with Dan.’

As she stared down at the pages, she thought now of the man she had so nearly married.

Regret Overload

She’d met Dan while living with Izzy in Tooting. Big smile, short beard. Visually, a TV vet. Fun, curious. He drank quite a bit, but always seemed immune to hangovers.

He had studied Art History and put his in-depth knowledge of Rubens and Tintoretto to incredible use by becoming head of PR for a brand of protein flapjacks. He did, however, have a dream. And his dream was to run a pub in the countryside. A dream he wanted to share with her. With Nora.

And she got carried away with his enthusiasm. Got engaged. But suddenly she had realised she didn’t want to marry him.

Deep down, she was scared of becoming her mother. She didn’t want to replicate her parents’ marriage.

Still staring blankly at The Book of Regrets, she wondered if her parents had ever been in love or if they had got married because marriage was something you did at the appropriate time with the nearest available person. A game where you grabbed the first person you could find when the music stopped.

She had never wanted to play that game.

Bertrand Russell wrote that ‘To fear love is to fear life, and those who fear life are already three-parts dead’. Maybe that was her problem. Maybe she was just scared of living. But Bertrand Russell had more marriages and affairs than hot dinners, so perhaps he was no one to give advice.

When her mum died three months before the wedding Nora’s grief was immense. Though she had suggested that the date should be put back, it somehow never was, and Nora’s grief fused with depression and anxiety and the feeling that her life was out of her own control. The wedding seemed such a symptom of this chaotic feeling, that she felt tied to a train track, and the only way she could loosen the ropes and free herself was to pull out of the wedding. Though, in reality, staying in Bedford and being single, and letting Izzy down about their Australia plans, and starting work at String Theory, and getting a cat, had all felt like the opposite of freedom.

‘Oh no,’ said Mrs Elm, breaking Nora’s thoughts. ‘It’s too much for you.’

And suddenly she was back feeling all this contrition, all that pain of letting people down and letting herself down, the pain she had tried to escape less than an hour ago. The regrets began to swarm together. In fact, while staring at the open pages of the book, the pain was actually worse than it had been wandering around Bedford. The power of all the regrets simultaneously emanating from the book was becoming agony. The weight of guilt and remorse and sorrow too strong. She leaned back on her elbows, dropped the heavy book and squeezed her eyes shut. She could hardly breathe, as if invisible hands were around her neck.

‘Make it stop!’

‘Close it now,’ instructed Mrs Elm. ‘Close the book. Not just your eyes. Close it. You have to do it yourself.’