It's All About Your Pipeline
Having a huge month or getting lucky and blowing your load closing a few deals early is a great problem to have and while you are out celebrating you are seretely worried about what the hell you are going to do next month to hit your numbers. We all know a big month followed by a low month is just two average months so who really cares.
If you were watching your pipeline (how many prosects you have at any given time), you would be much better equipped to handle that month after. Obviously if you close more deals than expected your pipeline may be down somewhat but the key is not to have so few prospects that if you close them all, you are done. You want to make sure you have several (the amount differs depending on industry) extra so you aren't starting completely fresh the next month.
Always be managing your pipeline and make sure it doesn't dip below your preset goals or you will be stuck with the classic bottle rocket sales chart....sky high and then hits the ground hard.