I used to have my default engine set to ecosia. I loved it, but their recent change in their privacy policy about giving information to Google was a big no-no for me.
Having to do lists and noting things in the calendar. Having clear deadlines really helps in my case.
Swallowing while having strep throat.
I did Karate for 10 years and now I am training in Muay Thai. I made the switch because Karate focuses a lot on Kata and a lot of the Bunkai is pretty useless. Muay Thai is all about striking and timing.