Does wealth guarantee happiness?

I remember seeing a short film in a training class one time. The topic was striving for more wealth. The two main characters were an extremely wealthy businessman who owned a new private jet and the other was one of the mechanics who worked at the private airport and serviced that plane. The scene that stole the show was the businessman descending the stairs in a miserable state of mind having just lost a major client on top of his wife having filed for divorce and the mechanic arriving in a joyful state because he finally got the nerve to ask a girl out for dinner and she accepted. Two very different bank accounts and two very different attitudes. Happiness is fleeting….but joy is a decision!