CHARACTERS, EMOTION & VIEWPOINT by Nancy Kress. 2005 Writers Digest Books.
WRITER'S GUIDE TO CHARACTER TRAITS by Linda N. Edelstein, Ph.D., 2006 Writers Digest Books
BUILDING BELIEVABLE CHARACTERS by Marc McCutcheon (2000 Writers Digest). This book guides you into building personality profiles for convincing characters. Never stall out again with flat, unemotional people.
THE ARTISTS' WAY by Julia Cameron (1992 Putnam/Tarcher). This is a great 12-week self-directed workshop for identifying and owning your creative gifts. Great practical tips for supporting and encouraging the "artist within."
WRITE GREAT FICTION: PLOT & STRUCTURE by James Scott Bell (2004 Writer's Digest Books).
Bell not only explains plotting techniques, but also guides the reader with exercises that address scene construction and point of view. It is a writing course in a book that you can finish in the comfort of your home.