It is clear that inner peace is the principal cause of happiness. We can observe this in our daily lives. On days when we are calm and happy, even if difficulties arise or we fall victim to a mishap, we take it well, it doesn’t bother us unduly. But on days when we feel sad or have lost our usual calmness, the least little annoyance will take on enormous proportions and be deeply upsetting to us. ~Dalai Lama