When you’re busy, it’s easy to attend to the most demanding clients and forget others. Remember, though, that it is not always the loudmouth who should get your attention. Sometimes your best clients are the ones who, when they see that you deliver on the job you promised, will become repeat clients so it is more important that you keep them happy than a client who is prone to complaining.
This means that when you have competing priorities you should be conscious about the benefits of who or what deserves your attention for what that attention will achieve in the long term.