Passage
Be angry, and yet do not sin; do not let the sun go down on your anger,
Be angry, and yet do not sin; do not let the sun go down on your anger,
Ephesians 4:24 and to put on the new man, which in the likeness of God has been created in righteousness and holiness of the truth.
Ephesians 4:25 Therefore, laying aside falsehood, speak truth each one of you with his neighbor, for we are members of one another.
Ephesians 4:26 Be angry, and yet do not sin; do not let the sun go down on your anger,
Ephesians 4:27 and do not give the devil an opportunity.
Ephesians 4:28 He who steals must steal no longer, but rather he must labor, performing with his own hands what is good, so that he will have something to share with one who has need.
The verse centers on "angry", "down", and "anger". It is saying that the verse draws attention to "angry" and "down", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 25's "Therefore laying aside falsehood speak truth each..." into verse 27's "and do not give the devil an...", so "angry" and "down" belong inside that flow. In Ephesians context, the local focus is grace, union with Christ, the church, and new creation.
A plain takeaway is to answer the verse's own emphasis on "angry" and "down" with trust shaped by these words, not by a vague optimism outside the passage.