As a whm I do all I can to help in fight. When I have a good group and don't have to heal as much I cleric stance and spam Dps. Like others have said its a full group effort. I also try not to blame other roles cause the player could be having an off day. Sometimes I crash and burn a simple run. I started tank role to help me understand how to heal them better and I'm doing Dps to learn how to better chase them for heals since we healers just stand in one spot.