Create enough completed days that another completed day feels normal.

Your sense of what a normal day looks like is built from recent days. String together enough days where you did what you meant to do, and finishing becomes the expected shape of a day rather than an achievement. String together enough of the other kind, and doing the work starts to feel like a departure from how you live.

Focus on the count of completed days rather than the quality of any one. Lower the bar for what counts as complete if you need to. What you are building is a sense of normality, and normality is made of frequency.