Why am i just going around in circles?

Im trying to get better, I really am, but im not much better, if any better at all, than I was before, in fact I could even say I feel worse sometimes and a result of my depression/anxiety/mood swings (usually from depressed to manic), I want to cut/hurt my little brother (Idk why but its fun). I've been getting help, but I just don't know, it seems futile.