There is an everyday never-ending list of to-dos, some are really hard and take more resources than you planned (either time or money). It can be heartbreaking... things die if you have anything alive it will die sometimes its an accident like a tree breaking a fence and critters getting where they ought not be or some odd ailment or some dumb animal working really hard it seems to kill itself! Stuff breaks basically it boils down to -

THERE IS ALWAYS SOMETHING