Well said. Related/likewise, as a consultant, it feels great to hear from my clients when they are happy. Yes, I’m doing my job, and you’re paying me, but a quick note “hey, great job on the design, you knocked it out of the park!” really goes a long way.
I have some clients that I know are happy, but I never hear anything, and others that tell me they are happy for almost everything (except when they aren’t - so I know they aren’t lying). Guess which ones I’m more likely to hussle for a difficult deadline for? 
R