A few years ago Marshall Goldsmith inspired me to ask the following six questions at the end of each day.
Did I do my best to set clear goals today?
Did I do my best to achieve the goals I set?
Did I do my best to find meaning in life today?
Did I do my best to be happy today?
Did I do my best to support and bring out the best in others today?
Did I do my best to learn something about myself today?