Seek a balanced life

I just read the following piece from a holiday greeting from my rabbi in Boca Raton. Here is what he said and what I truly believe is a correct prescription to gauge our daily lives.

Like the Greek philosophers before him, the great teacher, Moses Maimonides taught that people should seek to find a balanced life. Our own experience has taught us the great truth in that. Excess seems to be debilitating. And although we all search for happiness, we all know that, at best, we can feel truly happy some of the time. Rainy days are as important as sunny days to the earth on which we live. And they define our reality.