Influencer: The Power to Change Anything

I'm currently re-reading the book 'Influencer: The Power to Change Anything'. In it the authors suggest the need to find 'vital behaviours', that is those behaviours that have a disproportional impact on achieving outcomes.
Here are a couple examples of vital behaviours.

For Long Term Significant Weight Loss (Influencer, P.42) research indicates three vital behaviours of those who have lost significant weight and kept it off for over 6 years.

• Exercise on home equipment
• Eat breakfast daily
• Weigh yourself daily

To increase customer satisfaction (Influencer, P.37)

• Smile
• Make eye contact
• Identify yourself
• Let people know what you are doing and why
• End every interaction with “Is there anything else that you need?”