Most Americans believe they're caring and upbeat individuals with a favorable outlook on life. Just over two-thirds of the respondents in a Brodeur Partners survey would describe themselves as "compassionate." Nearly 60-percent would call themselves "happy," while half of those polled say they're generally "optimistic." Age seems to play a role in contentment, with 70-percent of those 65 and older calling themselves "happy." Women are also more likely than men to say they're "happy," "compassionate," and "optimistic." Income plays as role as well -- to a point. Those with annual earnings between 75-and-100-thousand-dollars are the most likely of all income brackets to say they're "happy," "compassionate," and "optimistic." Happiness seems to be linked to marriage as well. Nearly two-thirds of married respondents report being "happy," compared to just 45-percent of single respondents.