poetry and honesty

A poem often loses its poetical effect because of the cliché contained; I mean that there is a difference between the effect of what we say in the real life and the effect of what we say in a poem. In the real life, a sentence like “I suffer very much!” can have an echo in the souls of the people around (which is perfect normal), but the same sentence in a poem is a very common cliché and breaks the poem. So it happens with some lines in some poems: “My life is a misery…”, “No one understood me…” Eventually, though the poet is honest in each word of the poem, poetry does not come. And that is mainly because poetry has nothing to do with honesty, but with authenticity; and this “authenticity” contains more than good and sincere feelings. It also assumes the long history of the poetry genre. In other words, as known, a poet needs to be careful not only with his/her feelings and moods, but at the same measure with all the other poets who had successively solved the difficult problem of originality and novelty before. In these terms, we could say that poetry is all the real feelings & emotions of the poet, indeed, but only when these "feelings & emotions" are filtered through his/her cultural acquisitions.