Business has, and always will be, about customers, and nurturing those relationships will need a good dose of art going forward.
customers
Thank You For Your Purchase
I can remember with WooThemes, we'd have hundreds of purchases a day totalling millions of dollars every year. Somewhere along the way, I lost the notion that hundreds of people were parting with their hard-earned cash (in $29 increments at times).
Beware the Me-Too
The incumbent competitor knows what the real pain or problem is that they are solving. They also understand why their customers are paying to have that pain or problem solved.
The Greatest Startup Hack: Give Your Customers Exactly What They Want
It is really difficult to solve some of your customers' problems because sometimes the solution becomes a problem for your company.
Firing Your Customers
Somewhere within a landscape of differing views on what constitutes good customer experiences, and how I/we should interact with customers, I've developed a tendency to fire customers when the situation requires it.