Charles H. Spurgeon on Psalms 119:59

I thought on my ways. The word signifies a fixed, abiding thought. Some make it an allusion to those that work embroidery; that are very exact and careful to cover the least flaw; or to those that cast accounts. Reckon with yourselves, What do I owe? what am I worth? "I thought" not only on my wealth, as the covetous man, Psalms 69:11; but "on my ways"; not what I have, but what I do; because what we do will follow us into another world, when what we have must be left behind. Many are critical enough in their remarks upon other people's ways that never think of their own, but "let every man prove his own work."

This account which David here gives of himself may refer either to his constant practice every day; he reflected on his ways at night, directed his feet to God's testimonies in the morning, and what his hand found to do that was good he did it without delay: or it may refer to his first acquaintance with God and religion, when he began to throw off the vanity of childhood and youth, and to remember his Creator; that blessed change was by the grace of God thus wrought. Note, 1. Conversion begins in serious consideration; Ezekiel 18:28; Luke 15:17. Luke 15:2. Consideration must end in a sound conversion. To what purpose have we thought on our ways, if we do not turn our feet with all speed to God's testimonies? Matthew Henry.