Selling salt in a cementery of your choice during the night.
;)
In all seriousness though, there is no job that isn't stressful.
Thread-starter's question is simply too shallow to have some
constructive discussion.
If you want career advancement, expect stress and lots of it,
I'll have to deal with it soon myself.
If you can't be bothered about advancing your career, then some
of the bottom jobs will do (Security guard, sweeper, etc).
Another alternative is if you have a rich AND doting long-living
father who is the CEO of a major company, you can consider working
under your own father.