Keybinds also help a lot. Instead of clicking and taking my focus off the fight I keybind all my abilities for quick responses, you do not need to copy my set exactly, but it is just an example of how I like it:
1 Cure
2 Cure II
3 Esuna
4 Cure III
5 Stoneskin
T Presence of Mind
F Repose
Push down Scroll Wheel (mouse) Medica II
Mouse Button 1 Regen
Mouse Button 2 Shroud of Saints
Ctrl 2 Protect
Ctrl D Benediction
Ctrl T Divine Seal

Sorry for double post: 1000 character limit.