A familiar story with questions..

[Rose888]

180 means identifying things in your marriage that aren't working and changing your behavior (often by doing the opposite of what you typically do, hence the name) to see if that improves the situation.

If the new behaviors yield better results than the old, then you keep doing them forever, or until they stop working and/or you think of an even more effective way to behave that yields better results for your marriage.

And the practice of identifying things that aren't working and changing your behavior is a lifelong practice.