At the risk of suggesting exactly what you said you don't want: medication. Ritalin specifically works wonders for me. And I was in the same spot as you: "No t

At the risk of suggesting exactly what you said you don't want: medication. Ritalin specifically works wonders for me. And I was in the same spot as you: "No thanks!", and also I can just have some more caffeine and get to work, right? For me, it was night and day. Like thinking your "brain motor" only has 3 gears, then medication suddenly shows you actually have about 10 gears.