Ummm... excuse me for being crass but, Bull shit! I officially call bull shit on that one.
Don't ask me why, but I've been thinking about regret lately and come to a rather different conclusion. Regret is real and tangible and equally as crucial as the aforementioned higher ground. It seems to me that a life worth lived is a life of stumbling blocks, hiccups, and stupidity. Thus in steps the Regret Fairy (think Tooth Fairy with a big ugly syringe or principal yielding paddle), filling our hearts with such darkness and pain that we instinctively never, EVER, want to make that same mistake again. Is learning from one's mistakes important? Absolutely. I just think that for some of us--namely, the stubborn, pig-headed, or just plain naive-- we need a big whack across the head before our mistakes really start to sink in. And just in case we conveniently forget later down the road, Regret is there to remind us, because--let's face it--like a paddle yielding elephant with wings, the Regret Fairy never forgets. And thank God for that.