What is the art of spirit?

We know about art.but what is the meaning of spiritual art or art of the spirit?
I have read a book and in that writer says that
prayer is the art of spirit.
Why should we learn this art? And how?
Comming to the first question.
It is clear from HOLY BIBLE that mankind is separated from god during his sin.

Gen. (2:17) Further God warned that in the day he did eat fruit of that tree man would surely die.

But adam did that sin as that is nothing but disobying  god.then mankind is separated and they lost the artvof praying. As it is natural art that god will give us from our bearth.
But beacuse of his sin it was lost
Now this is time for all to learn again.
JESUS CHRIST told us how to pray and in whos name we have to pray.
If he learn from him then we get this art which can do miracles in our life.
You will neaver be sick.you will never suffer for your problems. And for sure you will be happy.

Some qualities that god want

In bible

Job 35:12
New International Version (NIV)
12 He does not answer when people cry out
    because of the arrogance of the wicked.

So god will not accept our prayer if we are arrogent
So we should be simple in our life style, words and in everything like jesus

Job 35:13
New International Version (NIV)
13 Indeed, God does not listen to their empty plea;
    the Almighty pays no attention to it.

So we can be prefect with this art let us learn this art of praying

So we should listen to god and do everything as to the wish of god
For more read HOLY BIBLE.