Oh boy. Depression is a motherf#4ker. I can so relate to what you are saying, Stanwshura. I will not gloss over the seriousness of the exhaustion that is depression. When people say, "Oh, get some exercise-- take a walk and enjoy the sunshine" or "Eat healthier..." it doesn't help.
I don't know how long you have been sufffering from depression or if you feel
that you feel that your meds are working. Sounds like you could use a med management tweak. Or maybe you need a different SSRI (or other) type of antidepressant altogether. What work for one may not work for another. And upping your dose by even a little can sometimes work wonders.
Also don't know what type of therapy you are in.
That, too, can make a big difference.
In fact, sometimes being in a group therapy situation where you see and listen to others who are REALLY depressed can make you feel better. There but for the grace of God...
Even by offering a suggestion from your own experience you will feel better (get out of self -- great concept!).
I can recommend a book that is so simple but really laid it all out for me.
It's called "There Is Nothing Wrong with You" by Cheri Huber. In fact, it is published by Keep It Simple books.
(And trust me, I am not a self-help books kinda girl).
The last thing I can suggest is not to fight the depression but to go with it.
If today is a real low energy day and you know you will only be able to do one simple task, pick the task you CAN do. And do it. And tomorrow, maybe you can do two tasks. Or if your depression comes and goes (ebbs and flows) take advantage of the days you do have energy and do more things.
But don't overwhelm yourself further by setting your goals too high.
I used to have days years ago, when my depression was horrendous and self-medicated (not a good idea) when in a given day I could take a shower OR change the cat litter. That was really all I could muster.
But I kept at it. I kept fighting till I found the right mental health professionals for ME. We kept trying until we found the right combination of meds for ME.
I won't even bother to tell you what they are, because chances are they will not
be right for you anyway.
But don't give up!! You can beat depression, if not for good, at least for most days.
On those other days, let it go and wait for the mood to lift.