Designing Architecture by Andrew Pressman is an essential guide throughout the design process to every person involved in design and design related field.How to brainstorm, how to come out with all these ideas and while doing these works how to enjoy yourself.
A thoroughly guided and blissfully written, anybody going through it will feel the urge to start a design anew,such is the charisma of the writing.

Brief summation after each chapter makes the book more user-friendly and practical.
The book tells you a story.The story of design.I would request everyone to go through that story,live up to the joy of design once again and while doing so, not to forget to enjoy the Process.

More details can be found hee:

http://www.routledge.com/books/details/9780415595162/

ISBN-978-0-415-59515-5