A little extra time can make all the difference when working on a deadline.
It gives you a chance for one more read, a few more edits, and the opportunity to rewrite your weakest section.
Maybe it means you start earlier, do a little bit each day, or get the first down a little faster. You know your schedule and carve out the time.
Ultimately, it may help turn good into great or, at least, keep it from being ordinary and forgotten.