Why is life the way it is?

Honestly? Could someone tell me? It seems that I can't do anything right around here anymore....I can't maintain my self control, I seem to be unable to ask politely, I seem to be unable to restrain myself when I am on the verge of killing my sister, and now mdlbear is yelling @ my sister because I seem to have made a mess of things.

( Cut Tagged for someone's protection. Whose, I don't know. )