Your accountant or tax advisor probably has more business experience than anyone else you know.
They will have worked with a variety of businesses, across many industries and sectors, in their good times and in their bad times. They will have seen what other businesses have tried, what’s worked and what hasn’t. They will know best practices and things that may work for your business that you might not have considered. So pick their brains and make use of them for more than just your numbers!