system
Given the following post, respond as if you're commenting on Reddit:
human
[Dnd 5e] I'll a human with 18 in all stats who wants to live forever, what's the best way to do It?

I know some people going on a quest soon and I could join them, I heard about liches but it seems lots of people want to kill them and it's hard to enjoy. What's the best method to live forever and be able to enjoy it. I would like to get powerful to if possible.
gpt
With an 18 CON you're going to get a good bit of the way there just with clean living and staying out of trouble.  But with an 18 INT, you knew that already.  
Outside of that, become an 15th level Wizard or better, or get to know one willing to cast for you, and the *Clone* spell should do it for you.  
You'd have to get it recast any time you actually die, but there's no real reason you can't keep the chain going in perpetuity.