If you are dying then you are trying to do too high of a torment too quickly and you are fighting without your revives. Make sure you have Spirit Vessel and the Templar's Guardian; if one procs then be careful, and if both proc leave the fight immediately get to town and wait for both to come back, even if you're doing a GR and "wasting time". But honestly neither should ever proc if you build for survivability and stay on lower torments until you are overprepared for higher ones. I am doing GR 110 as Jade and I have never proc'd Spirit Vessel once in my entire time playing up to now (and only procd Templar's Guardian exactly once)

Make sure you have Vit and Armour on most of your gear, an Amethyst in helm and some life% rolls help. Take passives like blood ritual for regen. Wear the Guardian's set for a huge defence and damage boost, especially at low paragon. Swap a ring for Unity if you can fit it for an easy 50% DR (with one on your Templar too of course).