How could natural language processing be used in therapy?

How could natural language processing be used in therapy?

Recently, I’ve been asked for quotes on two such projects:

• digital grieving tool
• therapist for smoking cessation

See also my Quora answers to:

• I want to make a chat bot which will try to reply as a counselor. How should I go about it?
• What kind of A.I. is being used to treat PTSD with children or adults?