Well if the book is from Spencer Johnson you need no review to buy it. Just get it. And thats what I did when I saw this book in the bookstore.
The book is all about a mysterious PrEsEnT which can change the life of a person. As such Spencer tells the same stuff which we have heard before to make life happier and more prosperous.
But it is his style of narration which makes all the differences and you feek like following his ideas and suggestions. The narration in the book is same as the one he followed in Who Moved my Cheese and one gets engrossed in the book so much, that you wont keep the book down till you are done with it. This might be due to your eagerness to succeed and be happier, but the style of narration its own contribution in it.
The book starts with a female A calling her ex-colleague B to know the element behind his success and happiness. Then B narrates her a story which someone else had told him about a small boy and an old man, which changed his whole life. However B is sceptic that not all who listen to story would accept it. But A insists on telling the story. And here it goes, B narrates the story and it brings a big difference in the life of A and the other people to whom she told the story. So moral of the review is get this book from your nearest store and reat it, to change your life.
I dont want to elaborate much on it, but sure this book is worth reading and if you follow it religiously it can make difference in your life.
PS: The book and the review by Sujata on handling stress are great suppliment to each other.