It is important that you be able to Heal in battle and return t battle as soon as possible after rezzing.
To that end you should save your initial start up heals from newbie island so that you can start clicking heals as soon as you rezz, and make sure you carry a low lvl as well as a high lvl heal of each type once those are depleted.  While in combat a battle heal pack is essential, it can make all the difference between winning a fight or ending up at reclaim, these should be the highest lvl you can use without a buff.

More will be added to this topic soon