So, the way you would use emotions in devotional practices is aiming them towards God. For the other kinds of emotional realms, you witness them and you sit with them, and you watch them change and come and go, and you don’t deny them, you allow them; because that’s part of your human condition.
When you talk about service, you’ll see that it awakens intense emotions, and you have to let your heart break. But you’ve cultivated another plane of reality, which is the one that notices and allows it. A quality of equanimity that lies with it.