This sounds cheezy, but it's true.

Today what made me so happy was sitting at a stop light and taking the moment to observe the little snow flakes that were hitting my wind shield. They were so pretty and intricate. I was so happy and content just watching each one fall on my car. I was in no hurry to move. It is rare in my life that I take time to notice how beautiful nature is, so I was truly grateful for this moment. It made me happy.