Are you implying that you've narrowed it down to two options? It's either love or money? I think that the answer for me would probably be gratitude. If you're ungrateful, you will always feel like you're lacking something. You won't appreciate what you already have. If you are grateful, you'll be positive and optimistic. You'll see they best in everything even when you have challenges. Love definitely adds to happiness too. Money can increase your happiness, if you use it correctly, but it can only do that to a certain extent, then it stops increasing happiness.