Mistakes are the byproduct of action - and thus an accurate gauge of effort.
It's easier to be old than young. You make just as many blunders, but you've become much more adept at not recognizing them.
The resolve to diet is most easily summoned on a full stomach.
Once learned, the ability to disagree with a smile pays valuable dividends for a lifetime.
Personal happiness is so important, most choose to let someone else take care of it.
How do we not rue the many unchosen paths in life? A blessed lack of imagination. There are enough real glories along any path to swamp our meager ability to picture alternatives.