I often find that people confuse inner peace with some sense of insensibility whenever something goes wrong. In such cases inner peace is a permit for destruction: The unyielding optimist will pretend that the forest is not burning either because he is too lazy or too afraid to go and put the fire out.
All I have learned in life really just boils down to this: there is only one difference between the so-called wise and the so-called foolish.. And between those who are truly happy and those who are not. Those who are wise - and those who are happy - embrace and appreciate life. Those who are unhappy and unwise do not. That is all; that is the only difference.