Truly, Nam is the greatest gift of all, and one can only begin to have some idea of the magnitude of this wonderful blessing after going in.
Yes, to control the mind is the real problem. It is not an easy job to still and control the mind. One may do so to an extent, more or less, by study, contemplation and other means; but the mind is really controlled and becomes a friend only when it comes into contact with Shabd and begins to enjoy its bliss.
Controlling the mind by other means is like putting a poisonous snake in a basket (as snake charmers do here in India). It may seem harmless as long as it is in the basket, but as soon as it gets an opportunity it will surely bite. However, if the poison sac is taken out of the snake, there is no need of even putting it in a basket and one may handle it freely, as he likes.
One may approach the Shabd through intensive simran, that is the repetition of the five holy Names. One may hear various sounds, as you are hearing and this is good too but one will be joined to Shabd only when all the attention is concentrated above the eyes. (You are not to strain nor try to put your attention there, but simply keep it at the centre between the two eyebrows; it will go in and up of itself.)
The bliss or the enjoyment of Shabd is superior to any other pleasure which one can enjoy in this world. Once the mind begins to enjoy this bliss, it will be harnessed to it and will not turn back to worldly pleasures. It will then be like the snake whose poison sac has been removed.
Please go on working, and with faith and devotion attend to the spiritual practice regularly. By and by everything will be all right.
Maharaj Charan Singh, Light on Sant Mat