chronic depression and relapses

I've been diagnosed with dysthymia for about 5 years now. I've had it since I was young and is most likely caused by nurture.

I've tried nofap before
I have had a 27-day streak without porn and orgasm and then relapsed because my dick wouldn't go up anymore from touching it and I was craving the feeling of horniness.

the second time I had a streak of 44 days no PMO and then relapsed. That was today.
I was stressed up and couldn't resist urges after seeing porn flash by on my PC.

both times I tried nofap, my depressive moods were at an all-time high, even after 30 days. I often felt like it was all in vain. I was still lonely, anxious and unmotivated. Nofap doesn't cure my dysthymia so this time I know not to expect it.

I exercise daily, go to the gym 4 times a week, eat healthy, do well school, have hobbies including maths, psychology, writing and gaming, have friends, socialize and properly maintain myself and my hygiene.
Yet I still have symptoms. I admit I do all of these things mostly because I know they will reduce the effects of dysthymia, not because I actually want to do them. I do them because I know that if I don't, I will just be defeated for a long period of time. I don't even do the things I am supposed to do, I skip schoolwork, always turn up late, never have my stuff organized and can't be properly fun in many social situations.

still I will try to do nofap. I easily get addicted and noticed many weird symptoms both times. It may be hard for me to not masturbate, but it would be even harder for me to look at myself as some coomer. If I truly want to see results, I have to give what it takes, and not back down after I lost one fight.

today, I'll start again. no PMO