Vacation mode healing

After work today, well even for the past several days, I've been on vacation mode. It showed today on my Holier Than Thou Priest. I've let the tank die twice in a row on the very first group I've joined on Drak'Tharon Keep. I was about to say something in my defense but bowed out and said it was my bad & didn't heal fast enough. Compared to the next tank we had as well as the off-tank sort to speak, I had a better time healing them. I can heal but if the tank gets a third down in HP in the initial pull of a group, there's something wrong don't ya think? With the second tank, I planned ahead, anticipated with medium heals, threw in Shield for shats and giggles, and the most part over-healed. Not good me thinks, but all in all, it brought me down a bit, until now, I was spoiled and didn't have to heal 98% my tanks without worry. As for today? My heals were in vacation mode. Please ask me to leave if I'm in your group for the next two weeks.