As a poet myself - or a person who writes words of moments - and as a lover of poetry I have wondered when putting pen on paper myself what makes a poem a poem. I think this short video comes pretty close to defining a poem - or the feeling of a poem.
What I most appreciate about poetry is that there are on no rules on words, sounds, punctuation, spelling, shape.. Poetry is Freedom. It is expression like all great works of creativity. It is alive and held in the space of a moment. It is delicious in its most raw state.
From Ted Ed: What Makes a Poem a Poem