waiting

The hardest part of a farming business to learn is the ability to wait.  It is most necessary because the farming is not entirely in the control of the farmer and the farmer must deal with that or go crazy with worry, or possibly do something really stupid that ramifies throughout the crop year and for seasons to come.  Soils, especially those that are heavily clay, can be damaged severely by getting on them too early with tractors.  It is a close timing thing.  What is a good idea tomorrow will damage the land today.
The best that can be said about this is that it encourages humility, something in very short supply in the economy as a whole, not just farming.