What could be the real definition of working for yourself?
The difference between working for yourself and working for someone else is simply that you have more autonomy and initiative in making decisions about work, time...without having to ask anyone's permission. But besides that, you will be the only one who will have to bear all the responsibilities and consequences because you are the one who makes the decisions for everything.
If business owners, taxi owners, hotel owners and others who claim to be working for themselves need to depend on customers and customer satisfaction for profit, that is to be able to get money from them, are they really working for themselves?
Maybe the people who are actually working for themselves are those who do not need people or to satisfy any customer to make profit, example like the traders who do not need to lure customers to their shop like business owners or hotel owners, or taxi owner that need to follow instructions from their clients etc.
You can do it, you don't have to serve or try to please customers, you have the right to refuse their requests if you don't want to serve them. But you are also the one who has to suffer the consequences because it was your decision and if your business goes bankrupt it is your fault.