Mad as a Hater

   Anger also is related with other motivations. So therefore there can be positive anger. Anger out of hatred, out of fear--destructive fear--is harmful. But anger out of [a] sense of well-being, out of compassion, that kind of anger is positive. 
   So, like [the] ego feeling--ego feeling, just self-centered ego: it's negative. But another ego, the sense of [a] strong self, it's very necessary in order to build self-confidence and willpower. 
   --The Dalai Lama