Right or wrong clients?

It is not difficult to get tied right up in the notion of bringing any new customer as opposed to focusing on bringing the right customers for your organization. It is a fact that when you initially get started as an internet advertising manager customers who are less than perfect simply to get your foot in the doorway might be taken by you. That may have worked in the beginning for you personally but now you need more. How is it possible to prevent continuing to bring the customers that are incorrect when you have built your company?