The word for blessed, esher, is used here as a noun, and refers to something that the individual possesses.
The one who possesses blessings, is the one whose priority in life is making the Lord the center and focus of their trust.
There are only two things that you can focus on in life. The first is truth, which comes from Bible doctrine, and the second is everything else that is not related to truth.
Truth is the only thing that matches facts with reality.
Everything that is not truth, cannot legitimately match facts with reality. All untruths, force a match up, based on bias, based on imagination, based on invention, and based on delusion.
Anything that is not truth, does not deserve respect.
Anything that is not truth, does not deserve recognition.
Anything that is not truth, will only lead to false conclusions, and false decisions, and false reality.
Anything that is not truth, is a guarantee of failure.
Therefore, pursuing truth, means that you must forgo untruth.
Pursuing truth, means that you must learn truth. And learning truth comes only by means of learning Bible doctrine, on a daily basis, from instruction.
The proud, is a reference to those who pursue untruth. Pursuing untruth, is the pursuit of lies. And when a person pursues lies, then by default, they obviously are not aware of truth, because they do not know it, and are unable to discern truth from lies.
A person who does not learn truth, does not know truth, and therefore will go astray, in pursuit of anything and everything that is not truth.
The only way to avoid this mistake, is to learn truth, and that comes only by means of a daily study of Bible doctrine.
Blessings can only be possessed by those who know truth. And truth can only be known by those who learn Bible doctrine on a daily basis.
Blessings cannot be possessed by those who do not know truth.
Therefore, you have to decide whether you are going to learn truth, and thereby come into possession of blessings, or whether you are not going to learn truth, and thereby not possess the blessings from God.
Study [by instruction],
to show thyself approved [spiritually mature]
a workman [student]
that need not be ashamed [ignorant],
rightly dividing [learning, understanding, discerning]
the word of truth [Bible doctrine].