And make sure the Internet Archive indexes it. When people find old links that don't resolve anymore, IA is where they go.
Don't overthink this. Nothing lasts forever, but right now I'd say IA is the most likely repository to survive over the longest term, certainly in comparison to any for-profit company.
There is really no "for as long as you live persistent hosting"
Self-hosting: ISPs change, people move house, power black-outs take servers offline
Hosted: providers change policies, are bought out, go bust, payment details change
If you use something like Google Sites with your own domain, which is used by a lot of paying corporations, there's a good chance you'll never need to touch it again until you die, except for using some credit card information maybe.
Seeing as that's its mission and it's got the longest track record of it.
Any even if it fails someday as an organization, its repository is the one most likely to be maintained by a new organization with the same mission.