You have to find the man that survived the great flood. Although, you should live your life
There once were 2 great men named Gilgamesh and Enskidu. They both greatly loved adventures. They were not likely friends as Gilgamesh was a king and Enkidu was once a beast. Things worked out between them and they became the best of friends.
There is no secret to immortality, it's a gift from the gods.
Eventually, Enkidu died. It broke Gilgamesh's heart, and it made him realize that he didn't wwant to doe. He wanted to become immortal! SO he set out on the quest to find immortality.
I can't become immortal... but I can live my life!
He ventured out and found a cave that no man has entered. It was guarded by fierce monsters, but they let Gilgamesh in. He found a woman at the bottom of this cave of treasures. He told asked her how to get immortality, and she said to find the man that survived the flood, but that Gilgamesh should enjoy life.
Gilgamesh journeyed over the see to find the man. He was greatly disappointed when her heard that immortality was only gifted by the gods. So he got back on to his boat and sailed towards his kingdom.
After meeting the old man, Gilgamesh returned to his kingdom. On the way he was upset, but he took advise from the lady in the cave. He was going to live his life to the fullest, even if he couldn't be immortal.