Conflict needs to be goal-orientated in my view. Perhaps this is because as a teacher, I was used to planning lessons and then assessing whether my aims and objectives had been achieved. The frustrating thing when you are dealing with a toxic person, is that it can feel like you are going backwards. Toxic people in my view do not learn by your words. If they are to learn anything, it will be from your actions. There needs to be consequences. Toxic people do not change but I do believe they can learn which buttons it is unwise to push.
If you must deal with a toxic person, then I believe there needs to be clear consequences for any boundary transgressions.
Dr Henry Cloud
Boundaries need to be communicated first verbally and then with actions.