Parent Struggle? can somewhat help me with this crisis?

I've been on an identity search for the past couple months, and a lot of time is spent away from my parents and house. It's made me into somewhat of a better person than I used to be, besides the smoking. Anyway, I get annoyed with my parents very easily and yesterday they talked to me abou the cigs they found and about how I need to be part of the family. I'm so ******* angry now, that I cannot even function at all! they've screwed up my entire morale, making me feel helpless and wrong. These ******* just need to know that I don't want to be around them. Any suggestions other than talking it out to achieve a peaceful state of mind.