Stress is experienced in the mind. The solution is to experience happiness, Divine happiness in the mind. Therefore, bhakti must also be done with the mind.
There are two main categories of devotion: External practices of devotion and internal. Bahirang bhakti, antarang bhakti. Bahirang bhakti is done with the body or the senses. Like chanting kirtan, you do with your varni; that's external devotion. Reading, doing some path (पाठ), that is done with your eyes; that's also external devotion. Coming to the mandir and doing pranam, you do with your head and your feet; that's external devotion. Doing puja, you do it with your hands; It's external devotion.
External devotion doesn't solve the problem of how to eliminate stress or experience happiness in the mind. So we need to know about internal devotion. Internal devotion means joining your mind with God.
In external devotion, we're using our body and senses to do some devotion to God. But doing things with our body doesn't purify our mind or join it with God, so we need to understand more about internal devotion. Internal devotion is the means of joining the mind with God. However much our mind is joined with God, that much of God's grace is automatically received. And in the same amount, we start to experience true happiness.
So whether our hands are engaged in devotion or our head is engaged in devotion or our feet are engaged in devotion, none of that matters if our mind is not engaged in devotion. So we have to understand how to join the mind with God.
