I post the same stuff a lot too, and i've wondered the same thing. I've been in treatment for over six months now, and ive gotten worse.
however i know that its possible to - my aunt is going through her second depressive episode - but she had thirty years in which she was not depressed, and although the first episode was serious, it eventually went away. she described it as one day being on a walk and she could see everything so clearly, and could understand that it was beautiful and worthwhile and that life, in itself is more than worth it.
depression steals your hope, your happiness, your life - but i know that its possible to get it all back. and its good that you can still do what you can - youre strong and you CAN get through this.
the best of luck,
x