Link: Hacking Your To Do List with Your Calendar

Explained like this, this makes a lot a sense:

“When accepting a task, this philosophy proposes immediately allocating time in the calendar to accomplish it. Consider the due date, the time required, and the relative importance. Then book the slot…. This extra step reinforces the rigid time constraint immediately, not later when I’m staring at a lengthy to-do list and wondering where to begin. Each yes to a commitment is an implicit no to another. The calendar visualizes the tradeoff of each potential yes, making explicit the commitment to a task.”

Source: Hacking Your To Do List with Your Calendar