Not a bad book. The writing style is a bit childish (the author keeps repeating himself on different occasions as a way to make you understand well, but it feels like an adult trying to explain things to a kid..)
Osho does bring multiple valuable truths about what Fear really is, but hiw view of Life is quite drastic. The book basically tells you to drop all fears and live to the fullest (trully inspirationnal) and to enjoy only the present in every moment (from making love to looking at a flower, etc), but a bit too much, as thinking about the future and having ambition in life is not appreciating the present.
If you have read about the Jungian theory of the four masculine archétypes (King, Warrior, Magician, Lover), well Osho could be the definition of the Lover in its fullness. So it is a good book, but quite hard to agree on everything.