A beautiful description of a person who is "not of this world" can be found in Psalm 1.

Blessed is the man who has not walked in the counsel of the ungodly, and has not stood in the way of sinners, and has not sat in the seat of the scornful.
Psalm 1:1

Blessed is the person who does not share ignorant and blind beliefs of the human race. Blessed is the one who does not participate in vain and useless activities, those that drain our energy, hamper our potential and lead us nowhere.

But his delight is only in the Law of Jehovah; and in His Law he meditates day and night.
Psalm 1:2

Blessed is the person that finds the Source of life, the Way of life, the Law of life within himself (herself). This is what the Psalm is about. We may appreciate the Bible as God's word, but it is exceedingly better to realize that the true Book of Life is written within our hearts. As we commune with God, and daily meditate upon truths revealed to us by Him, we tap into the stream of infinite love, wisdom, and power.

And he shall be like a tree planted by the rivulets of water that brings forth its fruit in its seasons, and its leaf shall not wither.
Psalm 1:3a

Blessed is the person that is rooted in God, and does not depend on circumstances. Even if he (she) lives in a spiritually dry place, he (she) can be spiritually and mentally refreshed. Even his (her) body and respond to dominating thoughts of divine wholeness. Through the power of faith, he (she) is made well.

And all which he does shall be blessed.
Psalm 1:3b

When we are consciously connected with God, we prosper in all the things we do - not because we are more talented, or smarter than others, but because we are strengthened and inspired by God. When our works are done in God, we cannot be less than divinely successful. We know when and how to strike. We do not misuse our energy in fruitless efforts, trying to do the things which are not right for us. We become divinely effective, and this can be evident to all the people around us.

Being like a tree, we are willing to grow.
We are willing to drop the old leaves in order to grow the new ones.
We are willing, under God's guidance, to assimilate the best things from our surrounding, and to make them a part of ourselves.
As we grow, we are willing to participate into growth of others, by sharing with them our fruits.
We know that when we live according to Gods creative laws, we can experience no lack.

The whole world is our home - visible one, and invisible one, the one that is revealed, and the one that is hidden. We grow both branches and roots. They do not oppose to each other - they belong to each other. Heaven and earth join in us and around us.

Once I heard a story about an old saint from the Middle East, who never read the Bible, except for Psalm 1, because as soon as he read it, he decided that now he had enough to practice until the rest of his life. And so he did, quite successfully. This story sounds funny to us, especially if we hunger for an intellectual knowledge more than for transformed life. And yet, it bears much significance. The Scripture is so alive, that often the single passage, when realized in all of its deepness, can provide us a blueprint for construction of a happy and blessed life.

Blessing is a choice. Be blessed!