Joy is not best described as a feeling, but as a person.

Joy is that person that can warm a cool day,
Joy makes you want to never leave when you can't stay,
Joy takes out your best features when they try to hide,
Joy is that one you know will always be by your side.

You give joy your heart and soul,
Because you trust that they can keep those halves of you whole,
You give joy every thing that they could ever plea,
And that's how I know that joy is here now with me.