Hello there, a MMO-champion first timer posting here after many a night's headscratching and screaming at my raid's druids for an innervate. I've been playing a holy priest for about two years, of which one year I spent "inspecting" the floors from Black Temple to Ulduar.
To get into the actual problem - usually, during even normal mode Ulduar encounters (let's not go to what it is like during hard modes), I find myself using everything I have (Shadow fiend, Arcane torrent, mana potion, Hymn of Hope) at least once a fight. I am a holy priest who is one Yoggy-hard mode away from her legendary mace but I feel pretty helpless in front of my major problem called mana. I'm often put in an important role of doing something significant and can't really lean back and relax or let my out-of-combat -regen kick in, and my healing style is, if you would call it, a bit "triggerhappy". I keep my ProMs on cooldown, and if I'm not Prayer of Healing one group or another, I'm throwing around a whole lot of Renews.
To help this problem, I have gotten my metagem changed, my cloak enchant changed (actually went back to Tailoring just because of this) and have been trying to heal less. But usually I end up just as OOM as I was before.
Here's my armory for those interested!
I'd like your tips and tricks - what are you doing to conserve mana? Maybe you have a different build I should go for, or maybe there's something else I just don't know what to do right.