When we begin our search for a God it is natural for us to seek out knowledge from books, especially those written by our Church Fathers, the saints and elders of the Church. But there is a danger in this that we must be aware of.
Saint Theophan the Recluse says,
Turning his mind towards God with all his might, his one desire would be to read only of Him, to speak only of Him. But these occupations alone will not lead to what is sought, unless accompanied by other, more practical activities.
We also need to learn how to live the Orthodox life. This involves prayer, both collective prayer we experience in our worship services and our private prayer that is a daily activity. We must participate in the Sacraments especially Holy Communion and Confession. The other ascetic practices such of fasting are also important. We must gain self knowledge so we can make changes in our way of life. There are passions or habits we have that must be controlled. (See booklet Ten Points For an Orthodox Way of Life). So what is the danger in reading?
Saint Theophan writes,
The practice of reading and speaking of God will, used on his own, create a facile habit for such things: It is easier to philosophize than to pray or pay attention to oneself. But since it is a work of the mind, which falls so easy into pride, he predisposes a man to self-esteem. It may altogether cool the desire for practical effort, and consequently hinder sound progress by a flattering successfulness in this mental activity. For this reason sound-minded teachers warn their pupils of the danger and advise them not to concern themselves too much with such reading and talk to the detriment of other things.
Reading and dialog can become a substitute for what is really necessary to acquire the Holy Spirit so one can live in a way that is Christ like to live in union with Him.
Saint Theophan again,
It is wrong to become too much attached to reading it leads to no good and builds a wall between the heart and God would lead to the development of harmful.
When you read, read with the intention of learning how to change yourself. Then make a sincere effort to actually change how you live. Without changes little is gained.
Reference: Saint Theophan, The Art of Prayer, p 168