The Torah says that if a person makes a vow, “He shall not desecrate his word – according to whatever comes out of his mouth he shall do.”
The Torah places great emphasis on truthfulness. Breaking one’s word is a “desecration” of speech.
Perhaps, animals do communicate, but they do not have the sophisticated speech that man has. Speech is a sacred gift, and lying is a desecration.
Addiction and lying are inseparable. The addict loses all sense of trust, and until one regains trust, there can be no meaningful relationships.
An absolute dedication to truthfulness is a cornerstone of recovery.