The largest category of Psalms in the book of Psalms is lament. God knows that we will have seasons of anxiety and adversity, and he's given us the gift of prayer so that we can move from a place of pain to a place of peace. Prayers of lament help us find that peace by reminding us what we know to be true about God: that he is good, that he is in control, and that he has a plan for our lives--even in the hard times.