A friend of mine recommended this book for me:The Power of Your Subconcious Mind, By Joseph Murphy the Arabic version قوة عقلك الباطن, byجوزيف ميرفي. this friend of mine who is always down, depressed, sad, sees nothing good in this life, is trying to get out of that mental situation and he claims that this book is is really changed him to the better.

The weird thing is that the original English version is more than 40 years old. it was first published in 1962. and the book is still selling well. and people are downloading the arabic book from the internet freely. i wonder how good this book is ?