You should not...
You should not, of course, expect yourself, at the beginning, to be able to control the bird of imagination along the Salat completely. Actually, this is impossible. Perhaps those who stressed this impossibility had such expectations. The situation requires deliberateness, careful patience and gradual training. It is possible that you can first control your imagination during only one-tenth of the Salat or even less than that, in which you can have the presence of heart.
Then, if one pays more attention, and if he feels himself in need of that, he can attain a better result, and can gradually overcome the Satan of fancy and the bird of imagination, such that they come under his control in most of the Salat . However, you should never despair, as despair is the origin of all weaknesses and inabilities, whereas the flash of hope guides man to his complete happiness.
The important thing in this respect, however, is to feel being in need a mood that is little felt by us. Our heart does not believe that the source of the happiness in the Hereafter, and the means of a long-lasting life, is the Salat . We take the Salat to be an additional burden on our lives. We think it an imposition and an obligation. The love of a thing is seen from understanding its consequences.
We understood its consequence and the heart believes in it, and, therefore, we are not in need of any advice or admonition in acquiring it.
Those who think that the message of the Seal of the Prophets, the Hāshimite Messenger ( s ), has two dimensions: one belonging to this world and the other to the Hereafter, and take this to be a pride of the bringer of the Sharī'ah and the perfection of prophethood, know nothing of the religion and are unaware of the message and far from understanding the purpose of the prophethood.
Inviting to worldly things is quite alien to the objectives of the great prophets, since desire, sense of anger and the interior and exterior Satans are sufficient for such an invitation and it does not need the sending of messengers. The administration of desire and anger is in no need of a Qur'an or a prophet. The prophets, actually, have come to keep people back from this world to curb the release of the desire and anger, and to limit the sources of worldly interests.
An ignorant person thinks that they invited the people to this world. They say: “Do not acquire wealth by whatever means.