Does money bring happiness?

I don't think money guarentees happiness. I think that happiness is what we make of it. Even in the same situation or condition, some people always think in a bad way, but others think in a positive way. Money can never change this kind of negative mentality. Of course, money makes our lives more comfortable, but it's not everything. I think that I feel the happiest when I accomplish something that gives me a sense of achievement. The more achievements I have, the more money I get naturally.