EnJOY your day. A few years ago, in the midst of an imploding career and the fifth life reinvention, the common polite phrase, "Have a nice day" struck me.I suddenly realized that the day -- in all its promised messiness -- was going to be what it was. I could sit passively and hope to 'have a nice' one and begrudge anything 'not nice' about it.Or, I could be proactive -- and ENjoy my day.I have the power to infuse any day or moment with JOY.So, every time I'm tempted to offer the passive, non-committal phrase "Have a nice day" to the person behind the counter or the other end of the phone, I try to catch myself and say, "Enjoy your day!"