99% OF PROBLEMS
The crux of 99% of business problems rest on people and their beliefs, personalities, fears, and insecurities.
Remember: You are in business to serve your clients, not yourself. I have seen all too often, business owners running their business how it pleases them, not their clients. Once you start focusing on what your clients would like, as valued service, then you will start adding those values to your service and making your clients happy, and happy clients return and also spread the word.