This is a three-step process to finding happiness, inspired by my friend Liya.
Step 1: Identify one thing you do that makes you unhappy. Write it down.
Step 2: Look at what you wrote down. Replace it with something that makes you happy.
Step 3: Repeat one week from now.
Update: Thanks Adam for the LifeHacker post. Here's a great visual follow-up designed by Alex Koplin. Read more about his inspiration here. (Props to LH commenter Maave for the tip).