How many check-ins are enough to review?
Sparse entries make an average unstable and may miss the very days you most want to understand.
Record when you can. If you have fewer than four entries, treat the result as insufficient and consider another round.
Open my labWhat to notice
Look at when entries are missing and whether those days differed.
Record a 1–10 daily rating and whether you tried the activity. A missed day is useful context; it does not erase the rest of your week. At the first checkpoint, you can continue for seven or fourteen days, or choose something else.
How to interpret your result
Four is a product guardrail for caution, not a scientific threshold for significance.
Keep your original prediction separate from the daily ratings. Your starting rating, number of observations and changing circumstances all matter. A personal week can reveal a pattern worth exploring, but it cannot establish cause or statistical significance.
Evidence and context
This guide describes a small personal practice. For the wider research context, see Well-being-focused interventions: network meta-analysis of randomized trials. Research findings describe groups and study conditions; your lab records describe your own experience.