I tried this streak method, and I had a bad shoulder for a couple days meaning I had to break my streak.
And the problem with the streak is that once you break it, you no longer have an unbroken streak to motivate you to return to the habit. If anything, you don't want to look at your calendar any more because it hurts to look at the broken streak.
So disappointingly, the streak calendar is as powerful at demotivating you to restart the streak as it was at motivating you to continue an unbroken streak.
Similar for me. You make me think of a special-purpose calendar, that shows pairs of days. Then, your streak remains unbroken by just doing it every second day. One could improvise this, by marking off two days at a time. Could generalize to n days (e.g. 3 days, or weekly).
The demotivation of an "unbroken streak" is a kind of perfectionism, of noting what has not been done rather than what has. Interesting, because I think the idea itself is a way to combat perfectionism, in that Jerry notes done having written something (not how much).
When it does work, perhaps it works by turning perfection against itself. Perhaps there is a way to do the same judo trick on the demotivation you note?
And the problem with the streak is that once you break it, you no longer have an unbroken streak to motivate you to return to the habit. If anything, you don't want to look at your calendar any more because it hurts to look at the broken streak.
So disappointingly, the streak calendar is as powerful at demotivating you to restart the streak as it was at motivating you to continue an unbroken streak.