What Do I Need to Believe to Have More Joy?

Any change that you try to make To be what God called you to be That's not empowered by his grace You're not going to sustain it. Any modification in behavior Not matched by a change in belief Will eventually hit its limit. So if I want to be more joyful And I'm currently not What do I need to believe to have more joy? Well number one, I don't need to believe It's a sin for me to be down Because then I'm going to beat myself up because I'm down and now how am I going to have joy when I'm beating myself up for being down? If I want to experience the joy of the Lord When all I'm doing is wall