What is this feeling Im feeling?

Up and down, from one extreme to the next. I cant seem to grasp the emotions that are forming inside of me. Im over analyzing them, repeating every conscious move I have made over the past couple of days, and I still dont understand. This mood, this feeling, this phase has overwhelmed my entire being and caused me to be careless, but not a free spirit. I dont care who I dissapoint anymore, or how many times I let you down. I dont care if this gets done now or later. Im sitting, and sitting, barely living. This is the first time, in a long time, that I simply dont understand, but I still dont need your advice.