I stutter and have done a lot of research on stuttering. It's rare that adult stutterers ever completely stop stuttering, but these two ebooks are the best resources I know of for dealing with it:

http://www.stutteringhelp.org/Portals/English/Book_0012_tenth_ed.pdf http://www.scribd.com/doc/23283047/Easy-Stuttering-Avoidance-Reduction-Therapy

The short version is that the less you try to suppress or conceal your stuttering the less severe it will become in the long run.