Some of us are less fortunate and work in companies where every deadline was yesterday. Every task is wildly different and often means jumping into someone else’s project that you are seeing for the first time...In that environment, making all of this a prerequisite for shipping is a pretty good way to end up on a PIP. And then out of a job.

After reading this and having no other context: this sounds like a terribly mismanaged company. One bad month and it sounds like you could go under.

Some times you have to slow down to speed up. If that means working with clients on commitments, then be honest with them. If your sales team is over-committing, tell them to stop it. The situation is precarious as is.