To find permanent joy, you must look in the right direction. You will not find it in any outside object. Every object will rise, stay, and then cease. You have to look somewhere else for permanent, eternal joy. Don't attribute joy to something else, be it a person, the sun, moon, or stars.
Stop this tendency of going to outside objects, whatever they may be. Stop your mind from going in any direction outside. Then you must return to your inner beauty. That is your own nature: bliss eternal, which you have never felt.