Quick answer
Looking for good tends to turn up good. The verse is about what a person is scanning for.
Read both lines
Both halves turn on searching, and the NKJV footnotes the first verb as literally seeks, which makes the parallel exact: one man seeks good and one seeks evil, and each finds what he was looking for. The claim is not magical. A person oriented toward what is good notices opportunities to do it and attracts people who want the same, while a person hunting for an angle eventually finds people running the same hunt. The verse describes an orientation producing a life, which is this book's steadiest observation.
Related: Proverbs 11:23 · Proverbs 17:11 · Romans 12:9
New King James Version®, Copyright © 1982, Thomas Nelson. All rights reserved. Full copyright information. Scripture provided by API.Bible.
Go Deeper
If this verse has been used to put weight on you that it was never carrying, ask about it directly.