Tomorrow’s Wizard by Patricia MacLachlan, 1982.

In a way, this story is a collection of shorter stories, but they are all tied together. In the beginning, Tomorrow’s Wizard (that’s actually his name, he’s also called Tomorrow) has just been given an apprentice wizard named Murdoch. Their job is to listen for important wishes to grant. Each of the shorter stories in the book involves a different wish and how Tomorrow and Murdoch grant it.

The First Important Wish – Rozelle is a pretty girl but wild and given to fits of temper. Her parents had her later in life and never disciplined her, so she has never had a reason to learn to control herself. However, her tantrums drive everyone else crazy. Rozelle’s father, acknowledging how difficult it is to deal with Rozelle, wishes that he could find a man who was willing to marry her. Tomorrow hears the wish and sends a variety of suitors to meet Rozelle, but she doesn’t like them, and none of them really like her, either. Then, another possibility occurs to the wizards: the villagers have been complaining that they are afraid of a nearby giant. Tomorrow knows that he giant is really harmless and gentle, just lonely. Could it be possible that Rozelle is the company that he needs?

Three-D – Miller Few and his wife, Mona, are nasty people, two of a kind. Because he’s the only miller in town, Miller Few (known to his neighbors as Three-D for Dreadful Dastardly Demon) freely cheats his customers. He and his wife have no friends because they’re so awful. Then, one day, Three-D saves Murdoch’s life. To reward the miller, Murdoch agrees to grant him a wish. The miller and his wife decide that they want a nice, sweet child who would do their work for them. The child Murdoch grants them is indeed sweet. A little too sweet. Not only does little Primrose look pretty and do the housework, but she helpfully reminds the miller about his debts and the other things her parents do wrong. The miller and his wife become more careful and agreeable and gain new friends because of Primrose, but they aren’t very happy. They aren’t really being themselves, and they’re tired of being on their best behavior all the time. But, perhaps there is one thing that can stop Primrose from being overly sweet: the miller’s old cat, Clifford.

The Comely Lady and the Clay Nose – Geneva is a very beautiful young woman and has many admirers, but she knows that they are more in love with the way she looks than with who she is. It worries her, and she wishes for someone who would love her for the person she is. To help solve her problem, Tomorrow makes an ugly clay nose for Geneva to wear, telling her that it will help her to find the person she is looking for. When she puts it on, her former admirers flee, and for awhile, Geneva is very lonely, but she perseveres and ends up finding the love that she is looking for.

The Perfect Fiddle – Bliss, the fiddle-maker, is ironically an unhappy man. The reason is that, no matter how good his fiddles are, he can never make one that’s completely perfect. After Bliss tries several crazy schemes to capture perfection in his fiddles, Tomorrow goes to visit Bliss’s wife, Maude. Like Tomorrow, Maude has seen the problem with Bliss’s approach to his fiddles and finally asks Bliss the question that makes him reconsider whether perfection should be his goal.

The Last Important Wish – Although Tomorrow is impatient with his apprentice, Murdoch, he does like having him live with him, and he has also grown attached to the horse that lives with them both. However, he has come to see that the life of a wizard isn’t the one that Murdoch is really suited for. More than anything, Murdoch wants the experience of being born and living among humans. The horse, too, wishes for a kind master and a family. Tomorrow sees that it’s time to grant both of their wishes, giving the horse and Murdoch (as a baby) to a kind farmer with a wife and other children.

The book is currently available online through Internet Archive.