Bingo. Is this a real deadline, as in the work will be worthless if it's done the day after, or is it just a target date? If the latter, communicate (important!

Bingo. Is this a real deadline, as in the work will be worthless if it's done the day after, or is it just a target date? If the latter, communicate (important!) in clear terms that it will be late and push back if anyone complains about it. Then get some goddamn sleep, go for a bike ride, play some Xbox, whatever. It Is Not Your Fault It's Late. This is very likely a project management problem and should be treated as such. If anyone tries to blame you, blame the project management process, unapologetically and unhesitatingly. Do not sacrifice your health/sanity to make up for shitty project management or ridiculous expectations. If the rest of the company refuses to see it your way and work toward fixing their probably-broken processes immediately, start sending our résumés.