Any profile of Warren Buffet shows that he is patient, rational, a gatherer of information, not swayed by what the rest of the market thinks, and psychologically at ease with who he is. Deepak Chopra says this is why he is an iconic investor and so successful in what he does. Psychologists have shown that it is impossible to remove emotions from decision-making. Therefore, to handle risk well, you must consider your psychological reaction to it.
Read his article about this on LinkedIn.