Answer:
No, self speech therapy is not possible. It must be conducted by a licensed speech and language pathologist that will be able to objectively track and monitor progress. Internal perception of the communication difficulty will create an subjective environment. Successful speech therapy is objective. You get what you pay for.
....well, I'm not entirely sure this answers the question. I am a speech and language pathologist, and I agree that someone with a communication disorder needs proper assessment and programs. But at the same time, the individual can do a lot for themselves by practicing and following the programs that the speech pathologist has given. icommunicatetherapy.