Psalm one said so, part III
Actually, not just Psalm 1, but Psalm 2 as well. These two psalms belong together. You already get the hint that they do because, as we've noticed, the book of Psalms is not a random assortment. Two Psalms that lead in to a whole series of Psalms “of David”, yet without any heading of their own, deserve attention—especially when they stand at the very beginning of the entire collection of 150 Psalms.
These two orphan psalms (‘orphan’ because no-one is credited as author) do indeed function as an introduction to the entire book. They are Psalms that answer the question “How can I be blessed?” Verse one of Psalm 1 tells us that the one who is ‘blessed’ is the one who doesn’t walk in the counsel of the wicked. The final verse of Psalm 2 also mentions “blessing”, so that the Psalms are bound together by the same theme of “blessing”, beginning and ending on this note. According to Psalm 2 “Blessed are all who take refuge in [the Son]”.
It turns out that the key to getting God’s blessing is to faithfully meditate on God’s “law” (Ps 1:3), of which the book of Psalms is a prime example, and to seek refuge in God’s Son (Psalm 2:12). Mark’s gospel clearly identifies Jesus Christ as this Son (Mark 1:11). Read the Bible and put your trust in Jesus. The book of Psalms and, their message of how to be blessed, is profoundly Christian.