a system and method of use to help a person to stop or modify an adverse habitual health - related behavior , e . g ., smoking , weight control , stress management , etc ., by following a calculated regimen to commence on a day to be selected by the person . the system comprises a computer and a series of customized visually perceptible messages establishing a customized regimen to aid the person to stop or modify the adverse habitual health - related behavior . the computer is arranged to receive personal information about the person and which is relevant to the behavior and makes use of expert system software to provide the customized messages in response thereto . the customized messages are in the form of a daily sequence measured relative to day selected by the person for the regimen to begin . each of the messages is arranged to be read by the person in sequence on a daily basis and includes respective numerical indicia representing the number of days from the selected day to the day of said message . the messages are provided to the person in various ways , e . g ., delivered to the person on a daily basis by means of some electronic communication medium , such as the internet , e - mail , facsimile , etc ., where they are printed out by the person . alternatively , the cards or sheets may be generated by the system and provided to the person in hard copy form . the messages produced by the system may be updated and modified based upon information provided to the system by the person . moreover , messages may be provided by the system to a support person to aid the person wishing to change his / her health - related behavior .