Keep a list of your wins, even the small ones. On the bad days, it’s evidence.

Memory is unreliable, and it is least reliable when you feel low, because it hands you the failures first. A written record has no moods. It just sits there holding what actually happened, which is usually a good deal more than you can recall on a bad afternoon.

Start one today with the last five things that went well, however minor they seem. Add to it as things happen rather than at the end of the year. Read it on the days you are certain you have done nothing.