Need help with my 71 LA mara

Hi guys, im lvl 71 atm and having big def problems, I just dont know why do i take so much damage from mobs. I cant solo maps, even while solo running docks i can easily die.

My res are 80%,chaos -32%, armor with grace 4634, Life 2726/3173 447 reserved




Dps of elemntal hit 2160
Dps of LA 379

if i replace the life gain on hit with the weapon ele dmg, the dps goes up to 670.

you have several piece with no life, i would correct that.