Regret. It has powerful strength to trouble our hearts. Some of our most painful regrets are for opportunities lost. As John Greenleaf Whittier said:

Of all sad words of tongue or pen.
The saddest are these: It might have been!

How many people go under a dark cloud by thinking, even momentarily, of the person they almost married, the investment they almost made, the position they nearly won. But for every person who is filled with regret for an opportunity lost, there is another who regrets a deed done, a word spoken, a relationship consummated. These are the stories of decisions made, of tempers lost, of conversations that cannot …