Struggles in Creating a Cohesive Product Line

With a large amount of time available to really sit down and think through my designs, I have been able to be much more productive. I feel as though the quality of each design is getting better, leaving me wondering whether or not to do a complete overhaul of my shop. There are many designs that I am phasing out and replacing with some fresher items. This change is good, I think.
While I love these new items, I still feel as though a cohesive nature of my shop doesn't really exist. I tend to jump around from one thing to the next. I am inspired by so much that I have a hard time sticking to just one concept as a base in my design. Sometimes I wonder if this is a bad thing, but at other times I think it's good because I'm able to offer a variety of products to you all.

If you own a small design business, do you struggle with creating a cohesive feeling within your product line? And to those who are just customers, do you like having a variety of design styles to choose from?