I think a better way to word this would be to assess if you are happy with the deal you are getting from your customers. If you are willing to work like crazy

I think a better way to word this would be to assess if you are happy with the deal you are getting from your customers. If you are willing to work like crazy to keep someone happy for whatever reason go for it but it might be that you are putting out a fire that is not worth putting out. Weigh up the opportunity cost and see what you want to do then.