That non-zero day concept reminds me of Jerry Seinfeld's calendar: https://lifehacker.com/281626/jerry-seinfelds-productivity-s...
So, I got a notebook and created a daily log. The plan was to play at least 30 mins of guitar a day. I was to record myself every once in a while to keep a record of my progress.
So far I've made it to day 30! I broke the streak once because of prior commitment. It becomes a part of you and you feel bad/let down when you do not complete the daily ritual.
I'm planning on blogging the progress soon. Perhaps it may inspire others to pick a goal and seize it.