I run Paladin / 4x Shaman or I can drop in a Warlock or Druid or have 2x Shaman/Warlock/Druid it depends on how I feel that day. Currently I'm focusing on just the Shaman though and once there geared will gear up the other two more.

Thunderstorm, drop AoE Totems, drop Fire Elemental Totems. Taunt of anyone iwth aggro, drop a BoP if I'm out of taunts. Spam Chain Heal.

Quite often refresh of totems and walk clones backwards gives me ample time to pick everything up on the paladin again though. I have two specs, one if for raiding and the other is for bursty snap aggro in heroics which makes use of Seal Of Command and drops a little mitigation and other toys that are great in really long fights but not in heroics where a boss or trash fight is lucky to last 30 seconds.

It sounds like though you really want to re-evalute the way you play - at the moment it seems like if things are even slightly out of your comfort zone your screwed. 1 thru to = just do normal moves for all my characters. I use G6 on my Logitech Keyboard for my click macro. G5 for RR Spell Interrupts, G4 for everyone to stop casting and drop a big heal on the tank. G3 Bloodust, G2 Fire Nova, G1 ReloadUI.

Shift 1 All Heal Self LHW, Shift 2 All Heal Self HW. Shift E All Chain Heal Self. E Purge/Taunt, Q RR Thunderstorm, Shift Q All Thunderstorm.

And tbh my setup is a bit meh I really need to fine tune it and do some playing around but for now it 'makes do'. Yours sounds even simpler than mine and you might find if you have alot more of your tools and abilities availible to you that you might live alot more often.