((((Mary Alice)))) I'm so sorry to hear this!
Ok, you are not worthless. Look at how far you have come! Don't think that you are right back to where you were before, in that you are unemployed... because that is what depression will tell you.
You have accomplished much in this time frame. There are bumps in everyone's life. Please work hard to not crawl under that rock. Keep your head up as best you can, continue on what you know is good for you... reach out for more help...
I'm glad you are doing good with your meds, that will be a plus to help you get through this tough patch. Nothing is "wrong" with you; you are suffering and working to improve while suffering. That's a huge task!
Please don't disappear. You have worth. Use your other talents in the meantime.