Your recordings don't cover habit design directly, but a few of them point toward something workable. In the notes from early March you mention practice going better on days when you set the session up the night before. Try leaving a short memo each evening naming the one thing you'll practise and where the material is. After four weeks that gives you a record of what you intended against what you actually did, which is usually where a habit quietly breaks. Reviewing it on Sundays surfaces the friction faster than willpower does, and Quillfinch can fold the week into a summary.
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