Albert Einstein once said, " Learn from yesterday, live for today, hope for tomorrow ." The vaunted theoretical physicist was not only succinct, but spot on. By learning from yesterday -- and what's implied is really learning from our mistakes -- we can create a better, more fruitful today. But we must guard against the impulse to dwell on those things we did wrong. Instead, we should see the start of a new day as akin to turning the page -- the chance to start anew. Yesterday is no more. Focus on what you can do TODAY so that it turns out to be an even better day than yesterday was. While no one likes to admit they've made a mistake, we're only human. As long as we recognize what we did wrong and aim to right the ship so that history doesn't repeat itself, we come out stronger and wiser in the end. Moreover, life is a precious gift -- one that can be taken away at any moment. We really don't know when it'll be our time to bid this world adieu,...