The suggestions here are good for production. Over used aws secret manager and hashicorp vault before and both did everything we needed.
I find they're too much firepower for selfhosted, and prefer pass
Simple commandline tool, backed by a gpg encrypted git repo. Perfect for small use cases!
A game changer I had for acne as a teen was putting a new towel on my pillow every night. My pillow was likely riddled with Cutibacterium acnes from sleeping with acne.
It helped another friend with an acne problem as well.
Mind you that bacteria isn't always the cause of acne, but it's worth trying this trick for any people out there going through it.