Not that I'd recommend doing this, but back when I was younger, I had the not so bright idea that I could go to work come home, game the whole night, then go back to work. It was a terrible idea in hindsight, but I used to it a lot. To achieve this, I used to mix energy drinks and pre-workout to stay awake, and I'd drink it as though I was drinking water, so I ended up drinking a butt load. I just want to stress again though that I'd never recommend actually doing this though unless as a last resort, but even then I'd caution away from it. I get there are times when one feels they absolutely must stay awake, God knows the amount of times I accidentally slept through something, and ruined relationships, but as others have said planning is probably the issue you're facing.