The person who signals that some task works and is finished is you. You have way more control over this than you are giving yourself credit for.
If you spend your career acquiescing to every request to “just ship it” then, yes, slowing down a second to do a quality pass will seem impossible. But you really can just do it.
> The person who signals that some task works and is finished is you.
That's not how it works in most big companies. You can't take arbitrarily long to finish a project. Before the project is greenlit you have to give an estimate for how long the project will take. If your estimate is too big or seems unreasonable the project dies then and there (or given to someone else). Once the project starts you're held to the estimate, and if you're taking noticeably longer than your estimate you better have a good explanation.