“I propose that if you’re a knowledge worker—especially one interested in cultivating a deep work habit—you should treat your tool selection with the same level of care as other skilled workers, such as farmers. Following is my attempt to generalize this assessment strategy. I call it the craftsman approach to tool selection, a name that emphasizes that tools are ultimately aids to the larger goals of one’s craft. The Craftsman Approach to Tool Selection: Identify the core factors that determine success and happiness in your professional and personal life. Adopt a tool only if its positive impacts on these factors substantially outweigh its negative impacts.”