Over-booking is easy. The results can be shoddy performance, bad feeling, or lost perspective. When we feel hesitation, we are wise to question. Intuitive reluctance to tackle a task is often well-grounded. Better to clear the way than to rush headlong into discomfort.
Rigidity can carry a heavy price in a rapidly changing world.
If we feel overwhelmed or find a task unpleasant, we can sometimes make it manageable by breaking it into pieces or allocating small, fixed amounts of life to it. As a general rule, the more detailed the plan, the more certain is action. If we feel blocked, to imagine that we are planning for someone else, who shares both our goals and our boundary conditions, is a way to move beyond paralysis into action. Getting more information is another way to warm up to a task. Information gathering is usually pretty painless, and in the process of learning, we become engaged.