There are pleasures to be experienced in this world, so how are they different from the joy of the Holy Spirit?
(1) EFFORT. To experience the pleasures of the world, one must make the effort to seek them out; while the joy of the Holy Spirit is given to you by God.
(2) SOURCE. The worldly pleasures are experienced through external stimulants, while the joy of the Holy Spirit wells up like a spring from within the innermost recess of your soul.
(3) EFFECT. Here's probably the best part. With worldly pleasures, you enjoy them less and less each time and can even become sick of them, while the joy of the Holy Spirit refreshes you each time you experience it and you can never tire of it.