Chapter 1

Book 1, Psalms 1-41

Book 2, Psalms 42-72

Book 3, Psalms 73-89,

Book 4, Psalms 90-106

Book 5, Psalms 107-150

Righteous and unrighteous contrasted.  The righteous prosper, the wicked will perish.  This psalm obviously looks to eternity, not to history, for the truth of it.  It mentions judgment in vs 5.  After judgement, these things will be true. 

2025 - A man walks, he stands, and he sits.  Sleep is not mentioned because we don't control ourselves in sleep.  We are to avoid bad counsel, time with sinners, and scorn of others - judging them. 

2021 - Vvs 3,4 - Having just finished Job, these two verses repeat the position of Job's three friends.  The righteous prosper, the wicked wither and go away.  Yet the whole book of Job is about how this is not the case, not what we observe all around us.  How are we to understand this contradiction?  Perhaps spiritually.  The prosperity and peace of the righteous man is internal, and the destruction of the wicked is internal.  But even at that, I don't think it would be a universal truth.  Ahhh...then there is verse 5.  In heaven, in eternity, the wicked will be long gone.  God knows which is which, and only the righteous will be with him in heaven, in glory, with nothing but riches and health.  This place of justice is heaven.  Only there are the earlier statements universally true.

2025 - This verse:

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. [Psa 1:3 ESV].  Even healthy trees don't bear fruit all year round.  We have a season.  Our purpose is to produce that fruit.  And sometimes doing so requires nutrients from the soil where we are, water from a nearby stream, and sometimes a season of rest.  It is a cycle.