Ask HN: How do you optimize your focus?

There is no better feeling than being _in the zone_ for me. I forget to eat, to drink, to communicate. But besides through a fragile symphony music and totally empty surroundings (at home) or a busy café (with headphones) it seems really hard to trigger this flow state. Sprinkle some existential dread on top (due to the current employment situation...), and it becomes nigh-impossible.

So, HN, what are your tricks and hacks to _limitlesslify_ yourself? I'm becoming desperate.