This model is a sketch. I think there are a lot of variables that still need to be honed. But here’s what I came up with.

Regimentation is a daily practice with specific problems. You have to overome fear, you have to avoid procrastination, etc. You have to have daily recording sessions. You have to manage Willpower.

Habituation is a mid-range practice. You need to avoid danger zones, set up things like TinyHabits. You need to weather disruptions like travel. You need to manage Endurance.

Mastery is a long-range practice. You have to bust through plateaus to continually increase in skill.

Above is a rough graph of what this might look like. One plane is time, another is the SRHI, and another is GRIT. This is a real map of my meditation habit along time and the SRHI. I totally fudged it for Grit because I’ve only taken the Grit Scale three times.

Grit is what I’m using as a stand-in for the path to mastery since it’s defined as Endurance + getting over things like setbacks and plateaus. Habituation doesn’t care about plateaus. You can have a solid superhabit of playing the violin but not ever improve your skill at it. Grit seems to be the best scale for improvement, and it’s ability to predict success is one of the reasons why Duckworth was awarded the MacArthur Genius Grant.

Is it the best scale for this? I’m not sure. How does it play into Endurance? I’m not sure. But this graph seems to me the best model for all three variables - regimentation, habituation, and mastery.