I've dealt with depression on a 3rd person perspective, by helping others, since I've never really been depressed severely myself. I've been raised in such a way that depression is the man in the corner... almost; and that I rarely visit the guy. I know, that analogy was terrible. However..., the big however... I've been raised in a way of thinking. You've heard of Yin and Yang? Black and White? Start and End? Yes? The never-ending cycle that nature goes through in order to maintain balance.
Well, allow us to take this on. The aspect that there is an end to happiness and to depression and that both take their course in life over and over again. Now, note that I used the word severely when I mentioned that I've been depressed. So, then, when I have been mildly depressed, I've taken into consideration the cycle of nature that my depression will soon end and that it will return with happiness at one time or another. You can't have a lifetime of depression - nature would frown upon that - nature would try to make you happy.
Now, knowing this, and knowing that depression will eventually be surmounted by the proverbial iron boot of happiness, you can be happy, because depression is not eternal. Sure, depression is harsh, but to suffer now is to have pleasure later. So, to nature and this cycle, suffer with depression to have pleasure of happiness in the end and allow nature to take it's course.
If you know this, you will have the upper hand against depression!
By the way nice poem
I would write it a second time, and with greater enthusiasm, because I know, with my way of thinking, that when I get depressed I know that there will be pleasure at the end of it. There always has been a positive to my negative, without a doubt. What? Life is an endless ball of awakening destruction that has no U turn or no left or no right or no stop? It can't be. I couldn't accept that, and with anyone that has my way of thinking wouldn't accept it either. Now, I'll stop and leave it out there.
Also, read what I wrote. It was how I was raised to think when I had depression or had a similar experience of depression. I wish I was raised in the author's point of view to know how people deal with depression in their mindset, and obviously it's a bad experience. No doubt about it.
All I was doing was offering knowledge and understanding from my upbringing to those who had different upbringings but weren't learned what I learned. At least, as the probable open-minded person you are, consider such an alternative that negative implies positive and positive implies negative. Depression implies happiness and vice versa.
I'm not trying to sell you the idea or that what I jut said is the solution, but, in fact, play with it. Criticise it, test it, imagine it.
And by what I've just said, I didn't mean to offend anyone and I'm deeply sorry in advance if I did.