While God desires us to be happy in Him, that is not all He desires for us. Psalm 1 gives us a glimpse into how to be Happy in God.
Here are other resources and sermons to further your study on how to find happiness in God:
JD Greear - Why Am I Not Happy Psalm 1
JD Greear - Eight Ways to Be Happy, According to Jesus
Joby Martin - Great Joy
Tim Keller - The Search for Happiness