How can I relate money not buying happiness to The Great Gatsby?

Wow, you've sort of hit on a major theme of the book. Hope I'm not doing your homework for you, but I love talking about this one. Daisy has a green light on her dock which beckons Gatsby. The color of money is obvious here. Indeed as pointed out by a previous answer Gatsby spent a great deal of time becoming rich in unscrupulous ways just to attract Daisy. He offered love as well as money and Daisy chose to stay with her husband who offered security if not love. We look down on her for this choice, but we also see that the schemes Gatsby had set in motion were all about to fall apart just as his plan to win back Daisy is falling apart. So what is happiness? For Gatsby, it is just being with Daisy, but for Daisy it's so much more. She must have all the life style that goes along with the money. What her husband offers if not love and fidelity is security. Is Daisy happy at the end? For her, yes, we might feel sad that she doesn't have love or is Gatsby better off dead than living with someone who couldn't appreciate what love was? There's is more wonderful money symbolism in the novel so please don't stop reading even if your teacher is a "pushover".