"Blessed is the man that walketh not in the counsel of the ungodly, nor standeth in the way of sinners, nor sitteth in the seat of the scornful. But his delight is in the law of the Lord; and in his law doth he meditate day and night. And he shall be like a tree planted by the rivers of water, that bringeth forth his fruit in his season; his leaf also shall not wither; and whatsoever he doeth shall prosper. The ungodly are not so: but are like the chaff which the wind driveth away. Therefore the ungodly shall not stand in the judgment, nor sinners in the congregation of the righteous. For the Lord knoweth the way of the righteous: but the way of the ungodly shall perish." (Psalm 1)
This chapter starts out by telling us what we shouldn't do - get counsel from ungodly people, stand in the way of sinners, or hang out with scorners. It goes on to tell us to delight in God's Word, and to meditate in it day and night. This seems fairly simple, but if we just follow the advice given in this chapter, we will be blessed!