Close your eyes. Call up the face of someone still alive who years ago did something or said something that changed your life for the better. Someone who you never properly thanked; someone you could meet face-to-face next week. Got a face? Your task is to write a letter of gratitude to this individual and deliver it in person. The letter should be concrete and about three hundred words: be specific about what she did for you and how it affected your life. Let her know what you are doing now, and mention how you often remember what she did.
