I was just reading the April 2010 issue of Women's Day magazine, and there was a good page about the relationship between money and happiness. Some really good point they made are to consider if what you spend your money on fosters relationships with the people you care about. The quote they use is "experiences make us happier than stuff."
They also not that one of the most important things money can help buy is a sense of security. So when you are paying on your credit card debt, or contributing to your savings account you should remember that this will bring you future happiness and security.
Money can't buy happiness, but it can sure help give you a secure environment to work on the rest of what really does bring happiness - relationships, experiences, security, etc. And as they taught me in business school, cutting costs effects the bottom line the same as increasing sales. So when you go out and find a deal on discount auto insurance, it may just help make you happier.