As you most likely have experienced when you don't set expectations in your private life, soon enough others may feel you have let them down, because they set their own expectations of you or of what they believe you promised them.

The same goes for your business. It's extremely important that clear expectations are set in multiple areas.

E.g. when I sell my premier program, The Automated Millionaire Business System, I talk about the gain in making much more money that the client will be making fast when they implement my system. However, in the same breath it's critically important that I clearly set the expectation that they'll likely only make more money from the program when they adhere to using the system and methods I teach, and that when (or if) they revert back to doing things the way they used to, then they'll likely see the same old results they used to see.

Similarly, it's critically important in your pursuit for greater results and more profits that clear expectations are set for your people for their performance in their various roles.