Recomend aroma therapy, or plant therapy. Maybe a distance therapist. There is never a cure though. Maybe help via therapists. Just send positve energy his or her way. Thats all you can do really. But spells are only temp, so find a pro. thereapist (counseling and pyscho therapy) (which may be unrealistic), but a professional would be best
However, as magic is affecting change in accordance with will, what else in that vein of thought can you call it when someone uses therapy and behavioral analysis to change themselves to such an extent?
I wholeheartedly agree: going it alone with trying to conquer an anger problem is not advisable. It is a very difficult road to walk. Getting professional help in the matter is like adding paved steps on a steep gravelly slope. It can make the ascent much easier.
In my own walk on the same matter (I've broken my hand punching walls out of rage and didn't even feel it; I have come a long way since then), herbal remedies maybe worked but only momentarily.
It took years and practice and loved ones who objectively pointed out behaviors I did not realize. And it took a lot more than that.
KGP: Perhaps if you want a spell or something, and tread carefully with this because my own experience devistated me and basically ruined my life; it has been nearly a decade crawling out of that pit -- but you could cast a spell for the angry person to have an epiphany about their need to change. Perhaps they need an awakening or just to realize they get angry because they allow themselves to, not because others make them angry. I do not know them or of course their inner thoughts. But I used to blame everything else.
It is not easy to change a lifetime of habitual thought: "they made me get angry."
Maybe the individual is being test or set for a test. This is a pretty common thing in my experience. However I would reccomend aroma therapy, clensing the individuals house and maybe talking to the person to see if there is a reason behind it. The mind is affected by many things.