A quiet sense that things won’t get better — or uncertainty about what would even help
Difficulty concentrating, making decisions, or following through
A persistent sense of flatness, emptiness, or sadness that doesn’t lift
Low energy or a sense of heaviness that follows you through the day
Going through the motions without any real sense of engagement or meaning
Loss of interest or pleasure in things that used to matter
Changes in sleep — too much, too little, or waking unrested
Withdrawing from relationships or social situations