180 means evaluating the issues that you brought to the marriage and addressing them. If you used to nag, be supportive, if you were withdrawn, engage, etc. Take what your spouse thinks they know about you and surprise them by not following your typical behavior.
That's different than managing your emotions post-bomb.
Married 18, Together 20, Now Divorced M: 48, W: 50, D: 18, S: 16, D: 12 Bomb Dropped (EA, D): 7/13/11 Start Reconcile: 8/15/11 Bomb Dropped (EA, D): 5/1/2014 (Divorced) In a New Relationship: 3/2015