To open the App Settings, double tap the clock face:

From the settings you can adjust the following:

Select Display Notifications to receive notifications for strong emotions on your watch. Note -> disabling this setting will only prevent notifications from being displayed on your watch, they will still sent to your mobile app.

Depending on how you experience strong emotions, you may wish to receive notifications earlier or later in a escalation process. You can adjust the sensitivity from App Settings. From the App Settings, and select "Adjust Sensitivity". Press + or - to increase or decrease the sensitivity.