They say patience is a virtue; it’s probably also a blessing. How much would you accept in a year’s time instead of $100 today? Let’s hope, for your sake, you picked a sum not too much greater. More patient people grow richer and healthier than their more impetuous peers, according to a new study that compares elderly Americans’ willingness to delay financial gratification with their personal characteristics and lifetime outcomes. Older people are an impatient…