Passage
Let my heart be perfect in thy statutes, that I be not ashamed.
Let my heart be perfect in thy statutes, that I be not ashamed.
Psalms 119:78 Let the proud be ashamed; for they have acted perversely towards me with falsehood: as for me, I meditate in thy precepts.
Psalms 119:79 Let those that fear thee turn unto me, and those that know thy testimonies.
Psalms 119:80 Let my heart be perfect in thy statutes, that I be not ashamed.
Psalms 119:81 CAPH. My soul fainteth for thy salvation; I hope in thy word.
Psalms 119:82 Mine eyes fail for thy word, saying, When wilt thou comfort me?
The verse centers on "heart", "perfect", "statutes", and "ashamed". It is saying that the verse draws attention to "heart" and "perfect", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 79's "Let those that fear thee turn unto..." into verse 81's "CAPH My soul fainteth for thy salvation...", so "heart" and "perfect" 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 "heart" and "perfect" with trust shaped by these words, not by a vague optimism outside the passage.