Be willing and able to change your original plans, maybe several times, when you recognize that the game isn't going the way you thought it was. New facts, new conditions, or unplanned results of previous decisions (good or bad), are going to change the whole game. Insisting on slogging onward, following the original plan when it's gone bad, is not a good idea. (i.e., like when the GPS says 'Go forward' when you're posed at the edge of a cliff.)