Arrrrgh moments

I dislike this emotion that consumes me, I dislike that I am unsure what it is and from whence it emanates, most of all I dislike that I have little control over it. It feels foreign to me, this is not something I can recall experiencing before, in my thirty odd years on this earth and in the decade or more since I started to better understand myself, I am yet to understand this. Why, what is it, and more importantly how can I stop it. I do not, I repeat I do not like not having control or understanding of my thoughts and emotions. It disturbs me and is liable to cause me much displeasure. I must find a way to arrest this dis-ease of thought and feeling before it becomes like a cancer.