Do you consider yourself to have a Type "A" or Type "B" personality?
Type "A" personality people are characterized by competitiveness, perfectionism, and a sense of urgency, believed to be associated with an increased risk of heart attack. (so says Webster)
Type "B" personality people are characterized by amiability, tolerance of imperfection, and an unhurried manner, believed to be associated with decreased risk of heart attack. (so says Webster)