You've probably heard it approximately a hundred times in Battlegrounds, particularly if you play as either Horde or Alliance. Yep, they both have their moments -- the faction you're not in is no better than the grass is really greener on the other side of the walls of Orgrimmar. But that aside, you've probably heard people bemoaning the lack of PvP healers. "Hey," you think to yourself (like a good, contributing member of the team), "I've got that healer I leveled ... Maybe I should bring that character along to the next Battleground I do!"
That would be your first experience of the sheer, unadulterated joy of healing Battlegrounds. You may note a small quantity of sarcasm there; you'll be cursing your kind heart as you're repeatedly ROFLstomped by two DKs.
So how do you avoid your repeated untimely demise and start topping the healing chart in your local Battleground? And how do you transfer your skills into the Arena?
First and foremost, PvP is not PvE. Well, duh -- revolutionary stuff. But seriously, the skills you learned in PvE won't really apply here. The damage is not predictable. You can't prepare for it. There aren't phases. Standing in the same place in each encounter won't work. You don't have a tank whose job it is to protect you. And in one similarity to PvE, once people figure out you're the reason why they can't kill that warrior, they're going to be after you. Sadly, people can't be taunted, even with yo mama jokes. Also, none of this is true -- but I'll get to that much later.