A huge variety of behavior can get lumped in with customer behavior. Some behavior is positive, some negative, and some neutral.
Loyalty and retention programs at their core are tying to encourage a limited set of positive behavior (e.g. buying, social sharing). There's more behavior that you might want to encourage or discourage in your store though.
It's a good practice to sit down and list what behavior an ideal customer would have. Consider all types, don't limit yourself to just positive behavior.
If you describe exactly how an ideal customer would interact with your store, it can become easier to build systems to support or discourage that behavior. Those systems will make running the store easier as customers are guided closer to becoming your ideal customer.
Eric Davis
Retain the best customers and leave the worst for your competitors to steal
If you're having problems with customers not coming back or defecting to competitors, Repeat Customer Insights might help uncover why that's happening.
Using its analyses you can figure out how to better target the good customers and let the bad ones go elsewhere.