Joy is built-into & a natural by-product of salvation. If you are not enjoying your salvation, there’s a specific reason... Maybe it's because you're not really saved. Or maybe sin is zapping you of all godly pleasures. Or maybe you've forgotten how awesome your salvation really is!
Why is God so Happy? HIS PLANS ARE GOOD He alone is God. Nothing can stand in the way of His pleasure (because what He plans always happens). Many times, we are stuck living according to others’ plans... but not God! Never! Nothing can frustrate his plans - so He never gets frustrated! He's never disappointed because He knows exactly what to expect!