The Wellbeing FinderTM is designed to help you measure your general wellbeing and trend your progress over time. So you should take it only periodically (e.g., monthly). This will yield the clearest insight into how your general wellbeing changes over time.
We recommend that you take the Daily Tracker more frequently than the Wellbeing Finder. The questions on the Daily Tracker pertain to immediate events in your life, so taking it daily or weekly will give you the best opportunity to measure your wellbeing at a more detailed level.