In this episode, I talk about how to give an ultimatum effectively. What I mean by 'effectively is that you give the person you're dealing with an option and outlines the consequences either way. This is an effective way of dealing with problematic behaviour assertively whilst minimising the chance of defensiveness and resistance. 

Of course, you can't control the behaviour of the other person, but responding in a strategic way rather than reacting means that you increase the changes of a positive outcome.