We all have specialties where we make money with our business owner clients. I find that when one works with private business owners it’s helpful to have a broad knowledge on many subjects. If this broad knowledge is not your specialty, it’s important to know whom you can call on behalf of your client if they show interest in the subject you’re talking about.
Some of these subjects are crucially important to business owners and others are just things they will be interested in and want to know more about. I think understanding what is crucial versus just interesting will help you know how much time you should spend becoming knowledgeable in these different areas.