That I Might Not Sin

Many People think that Psalm 119 is simply long and tedious. By the end of the first stanza I've got the point! God's law is a good thing. I should obey God. Got it. Why keep going?
David Powlison suggests that what should come to your mind when you hear Psalm 119 is this:
“Psalm 119 is where I go to learn how to open my heart about what matters,
to the person I most trust.
I affirm what I most deeply love.
I express pure delight.
I lay my sufferings and uncertainties on the table.
I cry out in need and shout for joy.
I hear how to be forthright without self-righteousness.
I hear how to be weak without self-pity.
I learn how true honesty talks with God:
fresh, personal, and direct;
never formulaic, abstract, or vague.
I hear firsthand how Truth and honesty meet and talk it over.
This Truth is never denatured, rigid or inhuman.
This honesty never whines, boasts, rages, or gets defensive.
I leave the conversation nourished by the sweetest hope imaginable.
I hear how to give full expression to what it means to be human,
in honest relationship with the Person who made humanness in his image.”
(David Powlison, Speaking Truth in Love, p1