So there have been a couple of lessons that I've had to learn as a healer, some of which I'm still learning.
Lesson #1: Don't run!
Ok, so you're healing in an instance and all of a sudden the mean scary monsters decide to come give you some love. What do your instincts say? Well my initial instincts were: Run! Like crazy! That would lead to some amusing scenes of K screaming, running wildly, hands flailing... the mobs following... and the poor group tank trying to grab the aggro back. This wild spectacle could also lead to me or the tank aggroing additional mobs. Bad news. So now I know I have to stand there and grin and bear it, by throwing up barkskin and my emergency come help me macro.
Lesson #2: Love thyself
Sounds like I took this lesson out of some self help book. Basically it means not to forget how integral your health being up is to the group. There were times when I was starting out that I would be healing everyone else, and forgetting myself. I know, how selfless! But really, this does the group no good. Because a dead healer = a dead tank = group wipe.
Lesson #3: "All animals are equal, but some animals are more equal than others"
(Bonus points for those who know where this quote comes from). What does this mean? Well, it means K loves her group members, but unfortunately has to love some more than others. This is a lesson she still sometimes forgets. Her #1 focus is the tank. As much as K would really love to keep everyone happy, she just can't. If things get really crazy, I am going to try like heck to keep my health (see lesson #2) and my tank's health up. So who comes in third? It may depend on who we're fighting, how close the boss is to going down, how much health everyone else has, or how much mana I have. Or it may just depend on how I'm feeling (hee hee, cue cackling laughter and sinister rubbing of hands).
Lesson #4: Look both ways before crossing the street
So your parents probably taught you this lesson as a kid. What does this mean in WOW? Well you have a goal as a healer, keep everyone's health up. This is the goal, i.e. crossing the street. But in going after this said goal, you have to know what's going on around you... there could be a car barreling down the street! I need to get better at lesson #4. A lot of times I am so focused on the green bars on the left side of my screen and would sometimes be totally oblivious to what was going on around me. For example the last dragon boss in Ramparts breathes down fire to the group. The first couple of times in that fight, I died quickly because I didn't even notice that I was standing in fire and burning up!