Not for everyone it won't. Money is a form of power, when exercised effectively, it can greatly enhance one's prospects at happiness, or as I've heard cleverly quoted, permit one's own choice of misery. Many people have no worldly clue of where happiness lies, no amount of money would change that.
With any power comes some measure of responsibility, the failure to manage this tricky dichotomy can bring its own set of miseries. I've known few wealthy people (read: none) who'd happily trade their lot for insolvency, and for good reason.