Does anyone recognise this book plot?

[MyRelationshipIsWeird]

I remember reading a book many years ago, which I really enjoyed, about a woman who retired and - as her life revolves around her work -she was bereft and planned to commit suicide. However her colleagues bought her a diary as a leaving gift and she felt compelled to continue her life, as instructed by the diary?

Thanks in advance!

No I don't but I like the sound of it so hope someone does.

I tried googling it but it just came up with lots of ideas for retirement gifts!

Is it A five year sentence by Bernice Rubens?? Looks good!

That looks good well done for finding it butty.