Psalm 1 speaks about the path of blessing experienced by those who delight in the law of the LORD and meditate upon it, but warns against those who walk in the ways of the wicked.

Psalm 1

Book One

The Way of the Righteous and the Wicked

1:1   Blessed is the man¹
    who walks not in the counsel of the wicked,
  nor stands in the way of sinners,
    nor sits in the seat of scoffers;
2   but his delight is in the law² of the LORD,
    and on his law he meditates day and night.
3   He is like a tree
    planted by streams of water
  that yields its fruit in its season,
    and its leaf does not wither.
  In all that he does, he prospers.
4   The wicked are not so,
    but are like chaff that the wind drives away.
5   Therefore the wicked will not stand in the judgment,
    nor sinners in the congregation of the righteous;
6   for the LORD knows the way of the righteous,
    but the way of the wicked will perish.

Footnotes

[1] 1:1 The singular Hebrew word for man (ish) is used here to portray a representative example of a godly person; see Preface
[2] 1:2 Or instruction

(ESV)