Be kind to yourself and don't expect too much. When things are hard you can't do everything that you normally can do. So be a bit lenient to yourself and give yourself permission to curl up in a ball if you need to.
Also exercise really helps my mood. Just a 30 minute walk is enough. It helps to get outside and into the sun for a bit.
Talk with your pdoc - maybe your meds need tweaking a bit if you are still depressed.
Hope things improve really soon