As a business owner, what areas do you need to work on?

As a business owner there might be certain areas you need to put in more effort or more work, what area are you currently lacking in? For me I think one area I need to work on is my marketing strategy. When it comes to marketing I have very little skills about it. I believe if I can work more on this aspect, I we be able to do better in my business and grow it well.

At this time, my business become famous so there's no need to work out tools to spread the news like marketing. I can tap Facebook anytime and it's free of charge. My business isn't big but I earned more than enough.