Passage
Blessed art thou, O Lord: teach me thy justifications.
Blessed art thou, O Lord: teach me thy justifications.
Psalms 118:10 With my whole heart have I sought after thee: let me not stray from thy commandments.
Psalms 118:11 Thy words have I hidden in my heart, that I may not sin against thee.
Psalms 118:12 Blessed art thou, O Lord: teach me thy justifications.
Psalms 118:13 With my lips I have pronounced all the judgments of thy mouth.
Psalms 118:14 I have been delighted in the way of thy testimonies, as in all riches.
The verse centers on "blessed", "thou", "lord", "teach", and "justifications". It is saying that the verse draws attention to "blessed" and "thou", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 11's "Thy words have I hidden in my..." into verse 13's "With my lips I have pronounced all...", so "blessed" and "thou" belong inside that flow. In Psalms context, the local focus is worship, trust, the LORD's kingship, and covenant mercy.
A plain takeaway is to answer the verse's own emphasis on "blessed" and "thou" with trust shaped by these words, not by a vague optimism outside the passage.