Directly on the watch: timers, alarms. Via the watch: calendar events and the like whose notifications get picked up by the watch. Have to be proactive about blocking useless notifications though.
I have an Android phone and a galaxy watch 4, not sure how equivalents work on Apple.
I was planning to change my sub recently with a VPN but then I realised I already have YouTube premium and YouTube music already has everything I listen to, so I just cancelled.
The only way I'm able to get anything done is by externalising my memory. I just make sure I have reminders on a smartwatch so that they forcibly are brought to my attention even if I'm away from my PC/phone.
Not at the moment. I would love to run lineageOS, etc, but I keep buying phones they don't support, and at this stage, most of the things I used to need rooting for are no longer as necessary for me.
I find using a timer on a smart watch or yelling at a voice assistant works for keeping me on task.
If I dont... Well, the other day I found some cold cinnamon donuts I had been heating up in the air fryer.