[Moon-Child_Lman]

If you are an assassin then you have the pickpocket ability, so you can pickpocket Ribald at the Adventurere's Mart for the Ring of Regeneration, also drink a potion of Master Thievery before doing that. The ring regenerates 6hp/second you can also get another one if you solve a puzzle in the Spellhold dungeon, and if you have the boots of speed and 1 ring of regeneration, the regeneration rate reduces to 3hp/sec. And if you have the 2 rings and boots of speed u get 1,5hp/second. Also if u could try the Ring of Gaax.
Other than that if you selected 'rest until healed' u will have to wait 16 hours for your character to heal completely. You should also have many potions of healing...