The wise recommend against excess of any kind. This applies not just to the bad qualities, but also the good ones. There is a fable where King Bali was consigned to anguish and suffering on account of his being blindly and excessively charitable. Exceptions are always there, but for humans in general excess is best avoided.
A well balanced individual has the harmonious interplay of feelings, thoughts and actions. Such a person enjoys perfect mental health. We need to protect ourselves from going overboard, to ward off imbalance. (Akhand Jyoti English November-December 2008)