I find I can generally guide a conversation in the right direction, but I also find that I can never approach a project as though I'll be the person to tell the

I find I can generally guide a conversation in the right direction, but I also find that I can never approach a project as though I'll be the person to tell the client when a project is done. The client has to understand their product well enough to be able to tell me not only if / when it's done, but if it's not done they need to be able to explain precisely why it's not done. Not in a confrontational way, but in an exploratory way. As long as we continue to discover reasons to continue to work on the project, the expectation has to be that I'll continue to bill for the hours I put in.