Yesterday we saw that joy in the Lord in the here and now is dependent on believing Him to be sovereign, in control, and just. Do you need to think through the fact of God's sovereignty a little more so that you can share in this joy? Below are a couple of ways of doing that:
Why not spend a bit more time in Habakkuk? One of the best ways of doing that would be reading Martyn Lloyd-Jones' little book on it: From Fear to Faith. Available here.
Or if you want to think through the whole issue with help from throughout the Bible get hold of John Piper's excellent The Pleasures of God. Available here.
