Passage
Keepe thine heart with all diligence: for thereout commeth life.
Keepe thine heart with all diligence: for thereout commeth life.
Proverbs 4:21 Let them not depart from thine eyes, but keepe them in the middes of thine heart.
Proverbs 4:22 For they are life vnto those that find them, and health vnto all their flesh.
Proverbs 4:23 Keepe thine heart with all diligence: for thereout commeth life.
Proverbs 4:24 Put away from thee a froward mouth, and put wicked lippes farre from thee.
Proverbs 4:25 Let thine eyes beholde the right, and let thine eyelids direct thy way before thee.
The verse centers on "keepe", "thine", "heart", "diligence", "thereout", "commeth", and "life". It is saying that the verse draws attention to "keepe" and "thine", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 22's "For they are life vnto those that..." into verse 24's "Put away from thee a froward mouth...", so "keepe" and "thine" belong inside that flow. In Proverbs context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "keepe" and "thine" with trust shaped by these words, not by a vague optimism outside the passage.