If you think you've maximized it, almost 98% of the time you haven't. Go all out and don't hold back, if the PT wipes, just learn from your mistakes and get back in there and win it the next time. EVERYONE can improve in some areas, never be afraid to ask how you are doing and where you might be able to add more Dmg or something into a fight."

I main heal as White Mage. some stuff is DL, some is Relic. I consider myself one of the better healers. I make sure that everyone is topped off but I do NOT make sure that everyone has stoneskin or repeat stoneskin on a tank as I see it as a waste of MP. MP in longer fights is too precious to just waste on a 1-shot stoneskin that blows up faster then a virgin. (bad analogy, I know :| )