Confidence says that there will always be a second chance. It says that returning is possible.
The truth is that right now may be the only opportunity -- the single chance -- and that returning might not be a possibility. Second chances may present themselves in a new opportunity, but it is wrong to assume there will be another right now. The idea, friendship, partner, song, feeling...may never be back.
If true, it means that right now -- living in the moment -- matters more than ever.