Trouble on Tuesdays

Sara Swan's family has settled the problem of moving house. But now her father is going through a mid-life crisis and leaves home on a Tuesday. And speaking of Tuesdays, Sara discovers that Tuesdays are bad-luck days for her in more ways than one. So when she hears a turn-your-life-around guru on TV say that you can change things if you write about misfortunes and analyze them, she decides to write a diary on Tuesdays—mainly about Tuesdays! Great Aunt Grace (GAG) moves into town, causing problems as usual. Sara's friends have their ups and downs, romances grow and wane, and all the bad luck still happens on Tuesdays. Finally, towards the end of the year, things begin to change for the better on Tuesdays, but. . . what happens on Wednesdays?