PRAYING THE PSALMS ENRICHES OUR RELATIONSHIP WITH GOD

Since the Psalms are prayers they are expressions of the heart and of faith with which everyone can identify and in which that experience of special closeness to God — to which every human being is called — is communicated.
Moreover the whole complexity of human life is distilled in the complexity of the different literary forms of the various Psalms: hymns, laments, individual entreaties and collective supplications, hymns of thanksgiving, penitential psalms, sapiential psalms and the other genres that are to be found in these poetic compositions.  
Pope Benedict XVI

We pray with psalm 6:

A Penitential Psalm
Do not reprove me in your anger, LORD,
nor punish me in your wrath.
Have pity on me, LORD, for I am weak;
heal me, LORD, for my bones are shuddering.
My soul too is shuddering greatly
and you, LORD, how long…?
Turn back, LORD, rescue my soul;
save me because of your mercy.
For in death there is no remembrance of you.
Who praises you in Sheol?
7I am wearied with sighing;
all night long I drench my bed with tears;
I soak my couch with weeping.
My eyes are dimmed with sorrow,
worn out because of all my foes.
Away from me, all who do evil!
The LORD has heard the sound of my weeping.
The LORD has heard my plea;
the LORD will receive my prayer.
My foes will all be disgraced and will shudder greatly;
they will turn back in sudden disgrace.

A psalm of trust in God

It is the anguish prayer of a sick person in great pain. He feels that the end of his life is imminent and pleads God to spare him. We can pray this psalm to express sorrow for sin, both personal and collective because, ultimately this is the cause of all sufferings and evil in the world.

This psalm may help us to abandon ourselves to God’s will, as Jesus did when he prayed, like the psalmist, “My Father, if it is possible, let this cup pass away from me. Yet not what I want but what you want: (Mt 26:39).

As we pray this psalm with Jesus, we renew our trust in the Father confident that He will save us from all evil and even death by leading us into eternal happiness.