In Timothy Ferris’s Tribe of Mentors: Short Life Advice from the Best in the World, Rabbi Lord Jonathan Sacks opines:
[Question: “When you feel overwhelmed or unfocused, what do you do?”] What did I key into the sat-nav system of my life [where do I want to be 10, 20 years from now]? What is my ultimate destination? You have to look at that every time you feel overwhelmed. Remembering that destination will help you make the single most important distinction in life, which is to distinguish between an opportunity to be seized and a temptation to be resisted.
What a fine image, the Garmin GPS of your life!