I've just entered into T13, but I'm finding it really hard to do any damage there.
I honestly don't know what to do besides from looking for ancient WoW, which really seems so far away. I haven't got focus/restraint yet neither as only restraint keep spamming on me... frustrating lol.
I've used Tal/FB guide as you can see from my char in the link
My main focus was CDR>CC>CD, but after reaching enough 50%<CDR, i've shifted my focus to more vit/ CD/CC.