Psalm 1
1 Blessed is the man that walketh not in the council of the ungodly, nor standeth in the way of sinners, nor sitteth in the seat of the scornful.
2 But his delight is in the law of the Lord; and in His law doth he meditate day and night.
3 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.
4 The ungodly are not so: but are like the chaff which the wind driveth away.
5 Therefor the ungodly shall not stand in the judgement, nor sinners in the congregation of the righteous.
6 For the Lord knoweth the way of the righteous: but the way of the ungodly shall perish.
Another favorite passage. It tells us exactly what to do to be blessed and how to prosper.