Build a house for the nurse. Place a long rope leading upward next to the house. Climb up, intentionally fall, heal yourself, and repeat the process as many times as needed. Note: Set the height of the rope as needed, depending on your total health. Have 1 gold in your inventory or in your piggy bank. Place one fire block, such as a meteorite, next to the nurse. NPCs are immune to its effect. Remove your armor as well as any lava resistance items. Remain in contact with the block and keep healing.