> It's essentially self-induced negative reinforcement on a platform you cannot really ignore as an adult working in technology.

I have tried this, but it flirts with a worse outcome: alarm fatigue. If I start ignoring one task, that risks bleeding over to another task. If I reflexively snooze "call mom" today then the chance that I snooze "write report" tomorrow is nonzero. Which, like you say, is unworkable as an adult in tech.

For me, physical notes work better than electronic ones. Push notifications are a pox on productivity, and I find that if I limit their use to (would-be) emergencies, they're super effective. But if they become noise, my entire computer risks turning into a work-free zone.