Passage
Trust in Yahweh and do good; Dwell in the land and cultivate faithfulness.
Trust in Yahweh and do good; Dwell in the land and cultivate faithfulness.
Psalms 37:1 Of David. Do not fret because of evildoers, Be not envious toward doers of unrighteousness.
Psalms 37:2 For they will wither quickly like the grass And fade like the green herb.
Psalms 37:3 Trust in Yahweh and do good; Dwell in the land and cultivate faithfulness.
Psalms 37:4 Delight yourself in Yahweh; And He will give you the desires of your heart.
Psalms 37:5 Commit your way to Yahweh, Trust in Him, and He will do it.
The verse centers on "faith", "trust", "yahweh", "good", "dwell", "land", "cultivate", and "faithfulness". It is saying that the verse draws attention to "faith" and "trust", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 2's "For they will wither quickly like the..." into verse 4's "Delight yourself in Yahweh And He will...", so "faith" and "trust" 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 "faith" and "trust" with trust shaped by these words, not by a vague optimism outside the passage.