The spiritual seeker says, why not do the other thing? Give up the desires and see if it works. So to give up the desires, you will get that happiness. Some sorrow means some surrety that which slips away from us continuously. These are the defects for trying to seek happiness by getting objects in the world. The Upanishad speaks up. Imagine the maximum possible happiness you can get in this world. To really be happy in this world, you must be young, you are young.