Welcome. I'm new here too. Take heart I've been there as well... as many of us here I think. Sometimes I feel depressed and overwhelmed with stress in my life now, so like maelstrom, I'm not sure I'm the wisest one. Find whatever support you can. Open up to someone in your life if you can about how you are feeling... that has helped me in the past. calling hotlines is good too. When I was at my worst, I would promise to do little things every day- get dressed - or cook one proper meal, or take a walk, etc. maybe for you it's to take a shower every day - or change your clothes - Even just doing one little thing helped me.
therapy talking etc is good. Have you looked into good sleep hygienne and exercise? Good sleep hygiene is something to look into too... (going to bed at the same time, having a bedtime routine... this sort of advice helped me... it took a while for it to work but it did help...) Exercise (which helps sleep) and decent sleep every day help... of course the thing is that when you are depressed its hard to motivate to exercise... (for me it was) but exercise can help with sleep and well as chemical related parts of depression (releases endorphins etc)
There are lots of different treatments for depression...