The key to finding lasting happiness is to notice where you actually experience happiness. Is it in an object that you see like your spouse, your children, your car, or your house? Or do you experience happiness right in your own heart?
The place where you actually experience happiness is the source of happiness. At the most an object can only remind you of what you already have. But your happiness does not arrive with the presence of an object, and does not disappear when the object changes or passes away.
When you abide as the source of happiness you will find the key that unlocks the door to lasting happiness. What a relief whan you can finally rest as the source!