Passage
And delite thy selfe in the Lord, and hee shall giue thee thine hearts desire.
And delite thy selfe in the Lord, and hee shall giue thee thine hearts desire.
Psalms 37:2 For they shall soone bee cut downe like grasse, and shall wither as the greene herbe.
Psalms 37:3 Trust thou in the Lord and do good: dwell in the land, and thou shalt be fed assuredly.
Psalms 37:4 And delite thy selfe in the Lord, and hee shall giue thee thine hearts desire.
Psalms 37:5 Commit thy way vnto the Lord, and trust in him, and he shall bring it to passe.
Psalms 37:6 And he shall bring foorth thy righteousnes as the light, and thy iudgement as the noone day.
The verse centers on "delite", "selfe", "lord", "shall", "giue", "thee", "thine", and "hearts". It is saying that the verse draws attention to "delite" and "selfe", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 3's "Trust thou in the Lord and do..." into verse 5's "Commit thy way vnto the Lord and...", so "delite" and "selfe" 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 "delite" and "selfe" with trust shaped by these words, not by a vague optimism outside the passage.