Sometimes the biggest challenge that leads to business shutdown isn't from external competitions around the business environment but from within the workforce.
A business person who owns a company must ensure to have internal control and structure in your organisation. With a functional internal control, employees display best practices, discipline and solemnity with how they dispose their jobs, resume and attend to work on time etc. Internal financial theft and misconduct are detected asap, then reducing the risk of collapse of the organisation from internally which are related with employee fraud.
And this is an extremely difficult topic that can be discussed a lot, first of all, it is better to conduct any business without friends and family initially, to divorce by hiring or your wife as a boss, because I think this is the only relative who, like you, will be interested in the result. If, for example, you hire a brother or friend, they can mess around, or suddenly demand a vacation, setting up your business with such actions. And if you don't let them go, they will be offended and the family connection will interfere with legally correct actions in such a case.
I think it's really better not to have business with friends, because wives are a very personal need for everyone. If one friend says that he worked harder than the other and that he should get more money, then a quarrel is possible. And by the way, about my wife, I will say that in the country where I live, it was a woman and her husband who organized the most successful business in the field of marketing, but now they are divorced and when the divorce process was underway, they sued for business and money. Apparently, with age, many successful men or women get the idea in their head that it's time to find younger partners to continue their lives. This idea is understandable. That is why lottery winners often immediately get divorced in order to start their "better life."