What a question! How do I know if I have true joy or the fake pasted on kind? That started me on the hunt for the definition of JOY:
the emotion evoked by well-being, success, or good fortune or by the prospect of possessing what one desires : Delight
Don't you love that? What is it that your heart desires? Is it Him or something else? To possess true joy our only desire has to be for Him. Our delight should be for Him alone. Not our spouse, children, worldly possessions or success. The joy that only He can bring is indescribable, boundless, unending...I want that in my life, don't you?
Take delight in the LORD, and he will give you the desires of your heart. Psalm 37:4
As the beloved apostle Paul wrote in James 1:2-3:
Consider it pure joy, my brothers and sisters, whenever you face trials of many kinds, because you know that the testing of your faith produces perseverance.
Surely after all that he had gone through for the gospel and he still counted it as joy-we can to! Make the choice today to be joyful no matter what your circumstances. It is hard to do, but Jesus never promised us an easy road, did He?