" A growing number of people have realized that they lack what the ancient philosophers would have called a philosophy of life. Such a philosophy tells you what in life is worth having and provides you with a strategy for obtaining it. If you try to live without a philosophy of life, you will find yourself extemporizing your way through your days. As a result, your daily efforts are likely to be haphazard, and your life is likely to be misspent. What a waste! "

― William B. Irvine , The Stoic Challenge: A Philosopher's Guide to Becoming Tougher, Calmer, and More Resilient