It is wrong to threaten to leave someone.
Sara has a partner with a drinking problem and it is taking a toll on the relationship.
Sara wants to discourage the drinking.
Sara expresses her concerns over the health issues related to alcoholism.
Sara gives her partner an ultimatum and says she will leave him if he doesn't quit.
Sara's partner finds the concerns to be valid and tries to cut back.
Sara's partner feels bad about the situation and copes with more drinking.