Yes, you do deserve the support. You have it.
I echo the thought of changing your environment, going to the park, doing something like taking a walk, going to the library. Exercise is something that I use to dispel the emotional energy that makes me want to do something self-destructive, too; that or read a book or be in the sun ...
And one other thing, maybe it'll sound hokey, but so what if it helps? And it does me, so I will mention it. But try hugging yourself, stroking your hands down your arms, massaging them or your shoulders or your legs .... T1 suggested something like this to me, doing something gentle, compassionate, appreciative toward my body ...... where you might cut, pinch, scratch, hurt yourself, do the gentle touch stroke instead .....