Most psalms come across as less preachy and more personal than much devotional writing. Another is that the writer whose heart is exposed to ours through his or her psalm very often suffers in a way familiar to us, or wonders in a way we recognize. People who feel out of place reading through the Sermon on The Mount may turn to the psalms and find plenty of company in their self-pity, persecution, pleading, and talking oneself into being brave. They are not theologians' craft, nor saint's confession, but human nature. And yet there is profound theology in it, and rich resource for the inspired heart.
Some psalms have the grandeur of cathedrals, and some the power of great music.
There are psalms which make you stop and think, and others that hint a great truth which you can just begin to intuit. The Book of Psalms often has been added to little volumes of the gospels, or included in printings of the New Testament. Their ability to connect with the whole range of human experience makes them that part of the Bible perhaps most compelling to the unbeliever. In their wrestlings and in their bold assertions of faith they give a vital sense of what it means to live in the presence of God. There are lots of resources for you to use to keep your Christianity woven into daily life.