I'm sure you're already doing this, but just do you're daily's and spam you're highest unlocked dungeon. If you get burned out, fates "just" above your level are a good option. The extra damage helps you learn your CD's better. If you put your choco on healer, you can pretty much single kill boss fates as long as your tp doesn't run out, lol. As mentioned above, food (even outside of dungeons) and heat of battle if your FC has it up. Oh, and try to keep your rested bonus up as well.