the only things that matter to you:
1. that everything, on the whole, works well enough today
2. that you want to come back tomorrow
the only things that matter *for a project*, from the project's own perspective:
1. that everything, on the whole, works well enough today
2. that *everybody involved* wants to come back tomorrow
if you're really having trouble with a specific task or a specific priority in service of a project, back up and look at it from the project's perspective.
("everybody involved" means your customers, too.)
(also, your infrastructure. see everything as alive: does everything want to come back tomorrow? if not, maybe you just found your top priority maybe?)