Look over your shoulder to ensure a slip, trip, or fumble today.
Naturally, we consider the past to do better in the future. (Do this when you are alone.)
When you are with others, remain in the present: with one foot in the past (fretting about a former fumble) and the other in the future (envisioning a repaired reputation), we sabotage the present.
Straddling ensures stumbling, providing us with a new awkward encounter we can never rectify.