Initially, yes, but studies have shown over time you normalise and are just as unhappy as you were before you had more money.

If I think of the people I know who are happy and unhappy, money isn't a great correlation factor, and I know people are borderline homeless through to millionaires - I know happy/unhappy people across capital worth and income spectrum.

A better correlation for happiness is attitude and gratitude and enjoying the small things - the very things the article references.