I have a pear tree, an apple tree, and a cherry tree in my yard. If they were not producing fruit, I could go out and buy a bunch of wax apples, cherries and pears and hang them on the trees. This would make the trees look productive to those passing by, but wouldn’t fool anyone who took the time to take a closer look.
For the Christian, joy is not rooted in some vague, self-generated sense of well being. Joy is rooted in the character of God and an understanding that Jesus has made a provision for us.