A gardener’s calendar includes weather that has not agreed to the schedule.

Plans that depend on living systems are proposals, not instructions. You can decide that the planting happens in the second week of April, and the frost, the rain and the soil temperature will make their own arrangements regardless. Experienced growers hold both at once: a plan detailed enough to act on and loose enough to be overruled without it counting as failure. That combination is harder than either discipline or flexibility alone.

Look at a plan of yours that involves something you do not control. Write down what you will do if it does not cooperate, so the change of plan is already part of the plan.