That's true. :PThings that have served me well just like others have stated are Cloak of Shadows and Feint. I cannot tell you how much I love Feint. I have it glyphed so it costs no energy and i usually use it while I am pooling energy (Except fights with large aoe's i try and save it for those moments, specially the aoe's that hit everyone this helps the healer out and will make them love you). Another thing I have gotten used to is just straight up RUNNING OUT OF MELEE RANGE. Most bosses you can avoid the devastating hits but im not 100% perfect so sometimes i slip up so instead of making the healer triage me i'll run out and pop a potion or wait till there is time for a spare heal. Some fights are REALLY heal intensive so i will pop some spare cp's on a recup.
TLDR:
1) Don't piss of healers (use feint and Cloak as well as some self heals if needed)
2) Don't stand in stupid stuff
3) Kill all mages in your party for their stupid ring of frost BS that covers all aoe's