Question for the formerly depressed about memory and anhedonia

Alot of successful guys had some depressive moment in their life, especially after breakup with some more or less special girl. Did you experienced having problems remembering details of the conversation? Or forgetting which girl was from which city or who said what? Have you lost a sense of time at some point struggling to keep track which day of week was it? Or maybe feeling less alive, loosing sense of existence with pleasure vaporizing in split seconds leaving empty void? Have you felt paranoid and more than just insecure/ hopelessly defeated?

If so then what was the breakthrough that you came back to normal existence or what have you changed that had the biggest difference?