You say you fail, how so? What kind of fails are you experiencing?
You've got some problems with your kit but nothing that's hopeless.
1. Stop gemming for defense. One you are at 540 defense (slightly less with your pvp shoulder 'chant) start gemming for stam instead.
2. Get a new enchant for your weapon. Blood draining, blade ward, mongoose (in my order of preference)
3. Armor enchant for your cloak.
4. +275 health for your chest.
5. Farm ToC-5 Regular until you get your hands on the Black heart and use it instead of the essence.
6. Fix your spec: You don't need Iron Will or Puncture. You do need Armored to the Teeth, Incite and Improved HS.