The present invention relates to a method for using a happiness note system, the method comprising the steps of: extracting specific vocabularies related to happiness from sentences written in a happiness note; calculating frequencies of the specific vocabularies; calculating a happiness index by means of the frequencies; and presenting corresponding questions and comments according to the happiness index. The present invention has a remarkable effect of facilitating healing by easily and accurately healing the mind by calculating a user's happiness index by means of the happiness note.
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