In business, as in life, things don’t always go the way we plan. Some days are disappointing: the account you have worked so long and hard to land decides at the last minute to go with your competitor;  the relationship you have worked so diligently to preserve goes south anyway; the promotion you know you deserve falls to someone else; someone you thought was a friend turns out to be a foe. You get the picture. In those moments, it’s easy for us to “lose it,” to fall apart. In these times, more than ever, we need a radical change of perspective or else negative thoughts and disappointment find a way to cloud our thinking and drag us into a dark place. Decades ago IBM sales executives were trained in what the company used to call “gratitude course.” These were the brightest and most tenacious recruits selling multimillion dollar systems…