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Excellent list. I would like to add a couple of things that have worked for me: 1. Ensure sufficient sleep (varies for each individual) 2. Identify and manage sources of stress 3. Practice mindfulness meditation Doing the above ensures that your willpower is stronger and you are able to stick with new habits.
Ironically, mindfulness meditation is exactly the habit that I'm struggling to build. :)
what also helped me was joining a meditation group for a weekly session, if you like, check wkup.org see if there's one near you, they're good people :)
like most things, the amount of benefit (clarity, focus etc) you get stepping up from about once a week to 2 or 3 times, is pretty huge. maybe that helps with motivating?
last thing, I like to tell myself, the time you spend is basically free. as in you easily get it back in ways of rest, focus, ease for the rest of the day.