Many people dream of having their own business. Not everyone gets to realize that dream, of course.
However, for those that do, there inevitably comes a time when they must give it up. It could be that they pass it on to someone else, such as a relative.
Another alternative is to simply close up shop and sell off assets and inventory, if there is any. Should they decide to sell the entire business instead, there are no guarantees anyone will buy it.