Planning = business value

What have the most business value? Planning does not seem like the most important thing but what use has the business value you build if the coming sprint does not work? It's like when I leave home in the morning. Of course, there are lots of business value that you wish to accomplish in the morning but if you don't make it work for the afternoon activities, you'll get into serious trouble. Cleaning has never the highest business value but it always needs to be done. Planning the coming sprints work the same.