At every hour give your full concentration, as a Roman and a man, to carrying out the task in hand with a scrupulous and unaffected dignity and affectionate concern for others and freedom and justice, and give yourself space from other concerns. You will give yourself this if you carry out each act as if it were the last of your life, freed from all randomness and passionate deviation from the rule of reason and from pretense and self-love and dissatisfaction with what has been allotted to you. You see how few things you need to master to be able to live a smoothly flowing life: the gods will ask no more from someone who maintains this principles.
Marcus Aurelius