Managers and leaders have a lot of different things on their plate. From making sure everyone in their team feels happy, getting lunch, helping your team to have a self-development plan for the future, talking to users, to ordering new desks for the office because there is not enough room for all the new employees: there is always so much to do and to take care of.
It is quite easy to overlook your primary goal as a manager: results. To be effective, you need to know what your real results should look like. There might be a thousand other things screaming for your attention, but as long as you are not delivering real results, it might be all for nothing.