“I’ll make them happy in My house of prayer.” (Mishlai 21:9)
Davening is a happiness, if you do it right. If you learn how to really daven, it’s like a long-distance call to your best friend. When Rabbi Akiva was praying Shemonah Esrai on Shabbas, he wept. It was permitted because he wept for happiness; he loved Hashem so much. When we stand in the azarah (courtyard) in the Bais Hamikdash, it’ll be packed, but we won’t feel it. Each person will be standing with four amos (cubits) around him, and everyone will be so happy.
"I just davened a delicious Maariv!"
When you’re together with love, you don’t feel the crowding. But when there’s no love, then no matter how big your house is, it feels crowded. “It’s better to sit with your wife at the edge of the roof [with no place to live, yet loving and respecting each other], than to live in a big mansion while fighting.” If you’re fighting, there’s no room. The Jewish people will be in the crowded azarah, singing Hallel together.
In that fire of love of Hashem, we will become melted and recast in a new mold. We’ll each become a new person. When I was a boy, I was once walking in the street between two European Jews who had just left shul. One of the men said, “Ah, did I just daven a delicious Maariv.” For him, happiness was davening. You can also have happiness from doing kindnesses for people. All kinds of happiness result from serving Hashem. — Most Beautiful Nation