Reversed, the Nine of Swords indicates that you are becoming incredibly stressed and anxious when, really, this need not be a complicated issue. You need to stop and objectively examine the reality of the situation.
The Nine of Swords reversed also suggests that your worry and despair may actually be harmful for you. The more you worry about something, the more likely it is you will manifest your worst nightmares.
Conversely, it is possible that you have already worked through this period of depression and worry and are starting to make a recovery. You might have recently realized that it is not as bad as you thought it was, and so you are beginning to calm yourself and relax about what was previously a frightening situation.