Monthly performance reports. If you are not managing by the numbers, you will have serious problems. If you have no plan, someone else will decide for you. Don't wait for someone else to tell you what to do. Some firms are great at developing killer strategies but cannot do anything with them.
Planning is good, but it's all in the implementation.
Lack of leadership is ultimately the number one firm killer. Now is the time to develop future leaders, not when the current leaders are ready to retire. The areas just listed are in your span of control. You simply need to make decisions about what you want to do. To help you decide what you should do in the future, you need to start paying attention to the changes that are taking place around you and learn how to read them.