One of the marks of a contemplative Benedictine is the Divine Office. That is our desire- to pray the psalms together. And sometimes we don't even know why we have such a desire for it; but we desire to be there to have the psalms pour forth from us.
It doesn't matter how we feel when we go in to pray. We need to put on the heart of the Church-- which is Christ-- and pray for His people. The psalms are really the prayers of God's whole people, which are poured forth through us.
I believe the psalms we pray are pools of grace for all people. Those who are thirsty come here and they drink of the psalms we pray. So often we hear people say, "I feel like there's such peace here." Why? It's the spring of water, the beauty of the Divine Office, that refreshes them and sends them on their way filled once again. Thus I am reminded of the verse from Isaiah which says:
The afflicted and the needy seek water in vain.
Their tongues are parched with thirst.
I the Lord will answer them; I the God of Israel will not forsake them.
I will open up rivers on the bare heights
and fountains in the dry valleys...
and the dry ground with springs of water. (Is 41:17-18)